A Gigantic Sarcopterygian (Tetrapodomorph Lobe-Finned Fish) from the Upper Devonian of Gondwana (Eden, New South Wales, Australia)
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{"title"=>"A Gigantic Sarcopterygian (Tetrapodomorph Lobe-Finned Fish) from the Upper Devonian of Gondwana (Eden, New South Wales, Australia)", "type"=>"journal", "authors"=>[{"first_name"=>"Ben", "last_name"=>"Young", "scopus_author_id"=>"55842478100"}, {"first_name"=>"Robert L.", "last_name"=>"Dunstone", "scopus_author_id"=>"55844263000"}, {"first_name"=>"Timothy J.", "last_name"=>"Senden", "scopus_author_id"=>"7003761127"}, {"first_name"=>"Gavin C.", "last_name"=>"Young", "scopus_author_id"=>"7402899970"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-84883356893", "sgr"=>"84883356893", "issn"=>"19326203", "doi"=>"10.1371/journal.pone.0053871", "pmid"=>"23483884", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)", "pui"=>"369732529"}, "id"=>"d5a09664-a317-307d-bbba-8be8e88262e3", "abstract"=>"Edenopteron keithcrooki gen. et sp. nov. is described from the Famennian Worange Point Formation; the holotype is amongst the largest tristichopterids and sarcopterygians documented by semi-articulated remains from the Devonian Period. The new taxon has dentary fangs and premaxillary tusks, features assumed to be derived for large Northern Hemisphere tristichopterids (Eusthenodon, Hyneria, Langlieria). It resembles Eusthenodon in ornament, but is distinguished by longer proportions of the parietal compared to the post-parietal shield, and numerous differences in shape and proportions of other bones. Several characters (accessory vomers in the palate, submandibulars overlapping ventral jaw margin, scales ornamented with widely-spaced deep grooves) are recorded only in tristichopterids from East Gondwana (Australia-Antarctica). On this evidence Edenopteron gen. nov. is placed in an endemic Gondwanan subfamily Mandageriinae within the Tristichopteridae; it differs from the nominal genotype Mandageria in its larger size, less pointed skull, shape of the orbits and other skull characters. The hypothesis that tristichopterids evolved in Laurussia and later dispersed into Gondwana, and a derived subgroup of large Late Devonian genera dispersed from Gondwana, is inconsistent with the evidence of the new taxon. Using oldest fossil and most primitive clade criteria the most recent phylogeny resolves South China and Gondwana as areas of origin for all tetrapodomorphs. The immediate outgroup to tristichopterids remains unresolved - either Spodichthys from Greenland as recently proposed, or Marsdenichthys from Gondwana, earlier suggested to be the sister group to all tristichopterids. Both taxa combine two characters that do not co-occur in other tetrapodomorphs (extratemporal bone in the skull; non-cosmoid round scales with an internal boss). Recently both 'primitive' and 'derived' tristichopterids have been discovered in the late Middle Devonian of both hemispheres, implying extensive ghost lineages within the group. Resolving their phylogeny and biogeography will depend on a comprehensive new phylogenetic analysis.", "link"=>"http://www.mendeley.com/research/gigantic-sarcopterygian-tetrapodomorph-lobefinned-fish-upper-devonian-gondwana-eden-new-south-wales", "reader_count"=>28, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Researcher"=>10, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>2, "Other"=>3, "Student > Master"=>2, "Student > Bachelor"=>5}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Researcher"=>10, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>2, "Other"=>3, "Student > Master"=>2, "Student > Bachelor"=>5}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Biochemistry, Genetics and Molecular Biology"=>1, "Agricultural and Biological Sciences"=>12, "Business, Management and Accounting"=>2, "Earth and Planetary Sciences"=>12}, "reader_count_by_subdiscipline"=>{"Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>12}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>12}, "Business, Management and Accounting"=>{"Business, Management and Accounting"=>2}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>1}}, "reader_count_by_country"=>{"United States"=>1, "United Kingdom"=>1, "France"=>1}, "group_count"=>0}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/979372"], "description"=>"<p><b>A</b>, ANU V3478, piece f3 showing associated lepidotrichia presumed to come from the pectoral fin. <b>B</b>, internal view of a scale, partly broken to show impression of external surface, one example from a patch of at least five round scales 25–30 mm across preserved on piece g5 inside the cheek of ANU V3468. <b>C</b>, similarly preserved scale near ANU V3468. <b>D</b>, internal view of isolated scale (piece h3). <b>E</b>, isolated fang (piece h4). <b>F</b>, piece g5 showing weathered left vomerine fang of paratype, ANU V3468 (all bone and rock whitened with ammonium chloride, except E, unwhitened).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646097, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g020", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646097", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:08:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/979327"], "description"=>"<p>ANU V3478. Incomplete flattened skull and left cheek in dorsal view, preserved on pieces f4 (left side) and h1 (right side) (latex cast whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646064, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g011", "stats"=>{"downloads"=>1, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646064", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:00:55"}
  • {"files"=>["https://ndownloader.figshare.com/files/979335"], "description"=>"<p><b>A</b>, Paratype, ANU V3468, external view of left cheek and lower jaw (latex cast whitened with ammonium chloride). <b>B</b>, Interpretive outline of bone sutures and other structures shown in A.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646070, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g013", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646070", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:02:33"}
  • {"files"=>["https://ndownloader.figshare.com/files/979332"], "description"=>"<p>ANU V3478. Interpretive outline of bone sutures and other structures shown in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g011\" target=\"_blank\">Figure 11</a>.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646067, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g012", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646067", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:01:41"}
  • {"files"=>["https://ndownloader.figshare.com/files/979304"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, Composite latex showing the dorsal surface of some dermal bones of the palate (latex cast whitened with ammonium chloride). <b>B</b>, Interpretive outline of bone sutures and other structures of specimen in A. Anterior margin of vomer after piece a8 and Jarvik (<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone.0053871-Jarvik5\" target=\"_blank\">[19]</a>: fig. 29).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646047, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g006", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646047", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:56:47"}
  • {"files"=>["https://ndownloader.figshare.com/files/979323"], "description"=>"<p>Right cheek unit of holotype (ANU V3426). <b>A</b>, <b>B</b>, Interpretive outlines of bone sutures and other structures shown in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g009\" target=\"_blank\">Figure 9A, B</a>.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646060, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g010", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646060", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:59:45"}
  • {"files"=>["https://ndownloader.figshare.com/files/979319"], "description"=>"<p>Right cheek unit of holotype (ANU V3426). <b>A</b>, external view; <b>B</b>, internal view (latex casts whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646057, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g009", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646057", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:59:03"}
  • {"files"=>["https://ndownloader.figshare.com/files/979381"], "description"=>"<p><b>A–C</b>, <i>Edenopteron keithcrooki</i> gen. et sp. nov. Restoration of head and shoulder-girdle in dorsal (<b>A</b>), ventral (<b>B</b>) and left lateral (<b>C</b>) views (based on the 3-D life-sized model shown in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g022\" target=\"_blank\">Fig. 22</a>). <b>D</b>, left lateral view of <i>Eusthenodon waengsjoei</i>, shoulder-girdle omitted (after <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone.0053871-Jarvik5\" target=\"_blank\">[19]</a>: fig. 26A). <b>E</b>, left lateral view of <i>Cabonnichthys burnsi</i> (after <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone.0053871-Ahlberg3\" target=\"_blank\">[16]</a>: <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g015\" target=\"_blank\">fig. 15</a>B). <b>F</b>, left lateral view of <i>Mandageria fairfaxi</i> (after <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone.0053871-Johanson2\" target=\"_blank\">[15]</a>: <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g021\" target=\"_blank\">fig. 21</a>b).</p>", "links"=>[], "tags"=>["shoulder-girdle"], "article_id"=>646106, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g023", "stats"=>{"downloads"=>1, "page_views"=>55, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Skull_and_shoulder_girdle_restorations_/646106", "title"=>"Skull and shoulder-girdle restorations.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:09:52"}
  • {"files"=>["https://ndownloader.figshare.com/files/979284"], "description"=>"<p>, plan of site, showing original position of four sarcopterygians (ANU V3426, V3468, V3478, V3479) and four <i>Remigolepis</i> (ANU V2378, V3469, V3470, V3471), and the saw-cuts made to extract the first <i>Remigolepis</i> (ANU V2378); 2 mm saw-cut in the laboratory separated this from the <i>Edenopteron</i> holotype (ANU V3426), of which only the lowermost layer is shown. <b>B</b>, section of main saw-cut viewed from the west after removal of the block containing V2378 (<i>Remigolepis</i>). <b>C</b>, layout and layering of ANU V3426, showing the original position of the palate and lower jaw (LJ) as outlines, the middle layer (hatched, right slope) containing the displaced right cheek and post-parietal shield, and upper layer (hatched, left slope) containing the parietal shield.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646037, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g002", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Excavation_site_for_Edenopteron_keithcrooki_gen_et_sp_nov_A_/646037", "title"=>"Excavation site for <i>Edenopteron keithcrooki</i> gen. et sp. nov. A", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:52:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/979354"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, Right opercular bone, external view. <b>B</b>, left opercular and subopercular and adjacent bones, anterior view. <b>C</b>, presumed left supracleithrum, external view. (latex casts whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646086, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g018", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646086", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:06:43"}
  • {"files"=>["https://ndownloader.figshare.com/files/979351"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, steinkern of left mandibular joint in lateral view (whitened with ammonium chloride). <b>B</b>, preserved bone of jaw symphysis in ventral view. <b>C</b>, Interpretive drawing of specimen in B.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646083, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g017", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646083", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:06:10"}
  • {"files"=>["https://ndownloader.figshare.com/files/979307"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, composite latex showing anterolateral view of part of the parietal shield (displaced) in relation to bones of the snout, left anterolateral margin of the skull and left cheek (anterior pointing downwards). <b>B</b>, presumed right tectal in external view, and ventral view (<b>C</b>). <b>D</b>, left lateral rostral bone in external view, and ventral view (<b>E</b>). (latex casts whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646050, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g007", "stats"=>{"downloads"=>1, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646050", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:57:32"}
  • {"files"=>["https://ndownloader.figshare.com/files/979339"], "description"=>"<p><b>A</b>, Holotype, ANU V3426, detail of the snout in internal view showing one premaxillary tusk and adjacent attachment surface (anterior pointing downwards; cf. <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g004\" target=\"_blank\">Fig. 4</a>B). <b>B</b>, ANU V3478, internal view of snout showing presumed premaxillary tusks compressed backwards over the premaxillae (anterior pointing upwards; extra fang on right side on either a displaced vomer or dermopalatine, but too incomplete to determine). <b>C</b>, Holotype (ANU V3426), composite latex of left maxilla in external view (for inner view of anterior end see <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g004\" target=\"_blank\">Fig. 4</a>C); <b>D</b>, Holotype (ANU V3426), internal view of posterior end of left maxilla (latex casts [A–C] and preserved bone [D] whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646073, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g014", "stats"=>{"downloads"=>0, "page_views"=>1, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646073", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:03:18"}
  • {"files"=>["https://ndownloader.figshare.com/files/979312"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, Interpretive outline of bone sutures and other structures of latex cast in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g007\" target=\"_blank\">Figure 7A</a>. <b>B</b>, Interpretive outline of presumed right tectal shown in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g007\" target=\"_blank\">Figure 7B</a>. <b>C</b>, Interpretive outline of left lateral rostral bone shown in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g007\" target=\"_blank\">Figure 7D</a>.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646053, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g008", "stats"=>{"downloads"=>3, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646053", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:58:09"}
  • {"files"=>["https://ndownloader.figshare.com/files/979374"], "description"=>"<p>Holotype (ANU V3426). Four spaced sections through XCT-scanned portion of left vomer from near the tip (<b>A</b>) to the basal attachment of the fang (<b>D</b>).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646099, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g021", "stats"=>{"downloads"=>0, "page_views"=>31, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646099", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:08:50"}
  • {"files"=>["https://ndownloader.figshare.com/files/979300"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, <b>B</b>, Interpretive outlines of bone sutures and other structures on the latex casts illustrated in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g004\" target=\"_blank\">Figure 4A, B</a>.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646046, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g005", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646046", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:55:28"}
  • {"files"=>["https://ndownloader.figshare.com/files/979292"], "description"=>"<p>Holotype (ANU V3426). Parietal and post-parietal shields in approximate life position (latex casts whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646043, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g003", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646043", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:53:49"}
  • {"files"=>["https://ndownloader.figshare.com/files/979283"], "description"=>"<p><b>A</b>, geological map, and <b>B</b>, stratigraphic section showing (black arrows) the type locality (Boyds Tower) and horizon for <i>Edenopteron keithcrooki</i> gen. et sp. nov. <b>Abbreviations</b> (stratigraphic units): <b>BB</b>, Bunga Beds; <b>TFB</b>, Twofold Bay Formation; <b>BBC</b>, Bellbird Creek Formation; <b>WPF</b>, Worange Point Formation. For more detail see <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone.0053871-Young5\" target=\"_blank\">[22]</a>.</p>", "links"=>[], "tags"=>["details", "et"], "article_id"=>646036, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g001", "stats"=>{"downloads"=>2, "page_views"=>22, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Locality_details_for_Edenopteron_keithcrooki_gen_et_sp_nov_/646036", "title"=>"Locality details for <i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:51:38"}
  • {"files"=>["https://ndownloader.figshare.com/files/979388"], "description"=>"<div><p><i>Edenopteron keithcrooki</i> gen. et sp. nov. is described from the Famennian Worange Point Formation; the holotype is amongst the largest tristichopterids and sarcopterygians documented by semi-articulated remains from the Devonian Period. The new taxon has dentary fangs and premaxillary tusks, features assumed to be derived for large Northern Hemisphere tristichopterids (<i>Eusthenodon</i>, <i>Hyneria</i>, <i>Langlieria</i>). It resembles <i>Eusthenodon</i> in ornament, but is distinguished by longer proportions of the parietal compared to the post-parietal shield, and numerous differences in shape and proportions of other bones. Several characters (accessory vomers in the palate, submandibulars overlapping ventral jaw margin, scales ornamented with widely-spaced deep grooves) are recorded only in tristichopterids from East Gondwana (Australia-Antarctica). On this evidence <i>Edenopteron</i> gen. nov. is placed in an endemic Gondwanan subfamily Mandageriinae within the Tristichopteridae; it differs from the nominal genotype <i>Mandageria</i> in its larger size, less pointed skull, shape of the orbits and other skull characters. The hypothesis that tristichopterids evolved in Laurussia and later dispersed into Gondwana, and a derived subgroup of large Late Devonian genera dispersed from Gondwana, is inconsistent with the evidence of the new taxon. Using oldest fossil and most primitive clade criteria the most recent phylogeny resolves South China and Gondwana as areas of origin for all tetrapodomorphs. The immediate outgroup to tristichopterids remains unresolved – either <i>Spodichthys</i> from Greenland as recently proposed, or <i>Marsdenichthys</i> from Gondwana, earlier suggested to be the sister group to all tristichopterids. Both taxa combine two characters that do not co-occur in other tetrapodomorphs (extratemporal bone in the skull; non-cosmoid round scales with an internal boss). Recently both ‘primitive’ and ‘derived’ tristichopterids have been discovered in the late Middle Devonian of both hemispheres, implying extensive ghost lineages within the group. Resolving their phylogeny and biogeography will depend on a comprehensive new phylogenetic analysis.</p> </div>", "links"=>[], "tags"=>["gigantic", "sarcopterygian", "lobe-finned", "devonian", "gondwana"], "article_id"=>646111, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871", "stats"=>{"downloads"=>4, "page_views"=>32, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/A_Gigantic_Sarcopterygian_Tetrapodomorph_Lobe_Finned_Fish_from_the_Upper_Devonian_of_Gondwana_Eden_New_South_Wales_Australia__/646111", "title"=>"A Gigantic Sarcopterygian (Tetrapodomorph Lobe-Finned Fish) from the Upper Devonian of Gondwana (Eden, New South Wales, Australia)", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-03-07 11:10:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/979346"], "description"=>"<p>Holotype (ANU V3426). Interpretive outline of bone sutures and other structures on the composite latex of <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g015\" target=\"_blank\">Figure 15</a>.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646078, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g016", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646078", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:05:07"}
  • {"files"=>["https://ndownloader.figshare.com/files/979343"], "description"=>"<p>Holotype (ANU V3426). Composite latex showing both lower jaws, gulars, submandibulars, operculum and shoulder-girdle (latex cast whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646075, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g015", "stats"=>{"downloads"=>1, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646075", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:04:17"}
  • {"files"=>["https://ndownloader.figshare.com/files/979296"], "description"=>"<p>Holotype (ANU V3426). <b>A</b>, composite latex of pieces a7 (anterior) and a14 (posterior) showing snout in dorsal view; <b>B</b>, composite latex (a8, b7) showing internal snout surface, and ventral view of dermal bones of part of the palate. <b>C</b>, inner view of anterior end of right maxilla (latex casts whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["et"], "article_id"=>646045, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g004", "stats"=>{"downloads"=>2, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646045", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 10:54:39"}
  • {"files"=>["https://ndownloader.figshare.com/files/979366"], "description"=>"<p><b>A</b>, <b>B</b>, <i>Edenopteron keithcrooki</i> gen. et sp. nov. Holotype (ANU V3426), left cleithrum and clavicle (latex casts whitened with ammonium chloride). <b>A</b>, posteroventral view showing overlap surfaces; <b>B</b>, anterior view of cleithrum showing postbranchial lamina. <b>C</b>, <i>Mandageria fairfaxi </i><a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone.0053871-Johanson2\" target=\"_blank\">[15]</a>. Cast from AFM ‘slab 191A’ showing the relationship between left cleithrum, clavicle, gular, submandibulars and lower jaw in ventral view (resin cast whitened with ammonium chloride).</p>", "links"=>[], "tags"=>["shoulder-girdle"], "article_id"=>646091, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g019", "stats"=>{"downloads"=>1, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Comparison_of_shoulder_girdle_bones_/646091", "title"=>"Comparison of shoulder-girdle bones.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:07:27"}
  • {"files"=>["https://ndownloader.figshare.com/files/979379"], "description"=>"<p>Three-dimensional model at life size (on display at Canberra Museum and Gallery, December 2011) used as a basis for the reconstructions of <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0053871#pone-0053871-g023\" target=\"_blank\">Figure 23A–C</a>.</p>", "links"=>[], "tags"=>["et"], "article_id"=>646104, "categories"=>["Physiology", "Evolutionary Biology"], "users"=>["Ben Young", "Robert L. Dunstone", "Timothy J. Senden", "Gavin C. Young"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0053871.g022", "stats"=>{"downloads"=>2, "page_views"=>46, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Edenopteron_keithcrooki_gen_et_sp_nov_/646104", "title"=>"<i>Edenopteron keithcrooki</i> gen. et sp. nov.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-03-07 11:09:25"}

PMC Usage Stats | Further Information

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Relative Metric

{"start_date"=>"2013-01-01T00:00:00Z", "end_date"=>"2013-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences/Anatomy", "average_usage"=>[248, 440, 562, 666, 765, 856, 944, 1028, 1112, 1198, 1282, 1362, 1430]}, {"subject_area"=>"/Biology and life sciences/Anatomy and physiology", "average_usage"=>[256, 428]}, {"subject_area"=>"/Biology and life sciences/Physiology", "average_usage"=>[256, 449, 572, 676, 775, 866, 955, 1041, 1127, 1213, 1290, 1370, 1437]}, {"subject_area"=>"/Earth sciences/Geology", "average_usage"=>[338, 522, 664, 773, 911, 1046, 1140, 1236, 1318, 1410, 1496, 1596, 1683, 1755]}, {"subject_area"=>"/Medicine and health sciences", "average_usage"=>[264, 460, 584, 692, 794, 887, 978, 1067, 1154, 1241, 1328, 1408, 1474]}, {"subject_area"=>"/Medicine and health sciences/Anatomy", "average_usage"=>[248, 441, 564, 668, 769, 859, 948, 1034, 1117, 1202, 1290, 1368, 1437]}]}
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