Sawfishes and Other Elasmobranch Assemblages from the Mio-Pliocene of the South Caribbean (Urumaco Sequence, Northwestern Venezuela)
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{"title"=>"Sawfishes and other elasmobranch assemblages from the Mio-Pliocene of the South Caribbean (Urumaco Sequence, Northwestern Venezuela)", "type"=>"journal", "authors"=>[{"first_name"=>"Jorge D.", "last_name"=>"Carrillo-Briceño", "scopus_author_id"=>"25626106400"}, {"first_name"=>"Erin", "last_name"=>"Maxwell", "scopus_author_id"=>"7005702069"}, {"first_name"=>"Orangel A.", "last_name"=>"Aguilera", "scopus_author_id"=>"6701329424"}, {"first_name"=>"Rodolfo", "last_name"=>"Sánchez", "scopus_author_id"=>"15030132700"}, {"first_name"=>"Marcelo R.", "last_name"=>"Sánchez-Villagra", "scopus_author_id"=>"7003293925"}], "year"=>2015, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-84949256994", "sgr"=>"84949256994", "doi"=>"10.1371/journal.pone.0139230", "pui"=>"607159101", "issn"=>"19326203"}, "id"=>"050d3811-572d-3a4b-9994-bfdf616caf95", "abstract"=>"© 2015 Carrillo-Briceño et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The Urumaco stratigraphic sequence, western Venezuela, preserves a variety of paleoenvironments that include terrestrial, riverine, lacustrine and marine facies. A wide range of fossil vertebrates associated with these facies supports the hypothesis of an estuary in that geographic area connected with a hydrographic system that flowed from western Amazonia up to the Proto-Caribbean Sea during the Miocene. Here the elasmobranch assemblages of the middle Miocene to middle Pliocene section of the Urumaco sequence (Socorro, Urumaco and Codore formations) are described. Based on new findings, we document at least 21 taxa of the Lamniformes, Carcharhiniformes, Myliobatiformes and Rajiformes, and describe a new carcharhiniform species (Carcharhinus caquetius sp. nov.). Moreover, the Urumaco Formation has a high number of well-preserved fossil Pristis rostra, for which we provide a detailed taxonomic revision, and referral in the context of the global Miocene record of Pristis as well as extant species. Using the habitat preference of the living representatives, we hypothesize that the fossil chondrichthyan assemblages from the Urumaco sequence are evidence for marine shallow waters and estuarine habitats.", "link"=>"http://www.mendeley.com/research/sawfishes-other-elasmobranch-assemblages-miopliocene-south-caribbean-urumaco-sequence-northwestern-v", "reader_count"=>15, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Researcher"=>5, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>1, "Other"=>3, "Student > Bachelor"=>2}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Researcher"=>5, "Student > Ph. D. Student"=>3, "Student > Postgraduate"=>1, "Other"=>3, "Student > Bachelor"=>2}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Materials Science"=>1, "Agricultural and Biological Sciences"=>5, "Earth and Planetary Sciences"=>8}, "reader_count_by_subdiscipline"=>{"Materials Science"=>{"Materials Science"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>8}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>5}, "Unspecified"=>{"Unspecified"=>1}}, "reader_count_by_country"=>{"Panama"=>1}, "group_count"=>0}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/2368713"], "description"=>"<p>(<b>A-J</b>) <i>Rhynchobatus</i> spp.: Urumaco Fm. [A-D: AMU-CURS-482 and E-F: AMU-CURS-628], Codore Fm. [G-J: AMU-CURS-638]. (<b>K-V</b>) <i>Pristis</i> sp. Buccal teeth: Urumaco Fm. [K-R: AMU-CURS-484], and rostral spines: Urumaco Fm. [S-T: AMU-CURS-243 and U: AMU-CURS-244], and Codore Fm. [V: AMU-CURS-620]. View: basal (B, H, L), dorsal (S), labial (R), profile (D, F, J, N, P), lingual (C,), occlusal (A, I, K, M, O, Q), oblique occlusal (E, G), ventral (U-V), posterior (T). Abbreviations: Fm., Formation.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582368, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g008", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Guitarfish_and_sawfish_of_the_Urumaco_sequence_/1582368", "title"=>"Guitarfish and sawfish of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368726"], "description"=>"<p>(<b>A</b>) Sharpnose shark <i>Rhizoprionodon</i> sp., (<b>B</b>) Hammerhead shark <i>Sphyrna</i> cf. <i>zygaena</i>, (<b>C</b>) Bull shark <i>Carcharhinus leucas</i>, (<b>D</b>) “Big tooth” <i>Carcharocles megalodon</i>, (<b>E</b>) Tiger shark <i>Galeocerdo cuvier</i>, (<b>F</b>) Spotted eagle ray <i>Aetobatus</i> cf. <i>narinari</i>, (<b>G</b>) Eagle ray <i>Myliobatis</i> sp., (<b>H</b>) Guitarfish <i>Rhynchobatus</i> sp., (<b>I</b>) Sawfish <i>Pristis</i> sp., (<b>J</b>) Stingray cf. <i>Dasyatis</i>. Artwork by Jorge Gonzalez.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582381, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g011", "stats"=>{"downloads"=>0, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Restoration_of_diverse_sharks_and_rays_in_coastal_lagoon_estuarine_at_late_Miocene_times_in_Urumaco_/1582381", "title"=>"Restoration of diverse sharks and rays in coastal lagoon-estuarine at late Miocene times in Urumaco.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368708"], "description"=>"<p>(<b>A-V</b>) cf. <i>Dasyatis</i>: Urumaco Fm. [A-D: AMU-CURS-589, E-F, I-J: AMU-CURS-495, G-H: 496], and Codore Fm. [M-V: AMU-CURS-636]. (<b>W-X</b>) Dasyatidae indet.: Urumaco Fm. [AMU-CURS-591]. View: labial (N, P, U), profile (B, F, H, J, L, R, T, V, X), lingual (W), occlusal (A, C-D, E, G, I, K, M, O, Q, S). Abbreviations: Fm., Formation.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582363, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g006", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Rays_of_the_Urumaco_sequence_/1582363", "title"=>"Rays of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368720"], "description"=>"<p>Light-gray shading indicates extinct taxa.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582375, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g010", "stats"=>{"downloads"=>0, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Habitat_preferences_of_Urumaco_sequence_elasmobranch_taxa_based_on_preferences_of_extant_relatives_/1582375", "title"=>"Habitat preferences of Urumaco sequence elasmobranch taxa, based on preferences of extant relatives.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368701"], "description"=>"<p>(<b>A-F</b>) <i>Carcharhinus plumbeus</i>: Codore Fm. [A-F: AMU-CURS-624]. (<b>G-J</b>) <i>Carcharhinus porosus</i>: Urumaco Fm. [G-H: AMU-CURS-472, and I: AMU-CURS-590], and Codore Fm. [J: AMU-CURS-631]. (<b>K-L</b>) <i>Carcharhinus</i> spp.: Socorro Fm. [K-L: AMU-CURS-630]. (<b>M-R</b>) <i>Negaprion brevirostris</i>: Urumaco Fm. [M-N: AMU-CURS-468, O-P: AMU-CURS-469], and Codore Fm. [Q-R: AMU-CURS-626]. (<b>S-V</b>) <i>Sphyrna</i> cf. <i>zygaena</i>: Urumaco Fm. [AMU-CURS-474; AMU-CURS-477]. View: labial (A, C, F, G, K, M, O, R, T, V), lingual (B, D-E, H-J, L, N, P-Q, S, V). Abbreviations: Fm., Formation.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582357, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g005", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Carcharhiniform_sharks_of_the_Urumaco_sequence_/1582357", "title"=>"Carcharhiniform sharks of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368697"], "description"=>"<p>(<b>A-J</b>) †<i>Carcharhinus caquetius</i> sp. nov. Holotype: A-C [AMU-CURS-499], paratypes: D-F, I-J [AMU-CURS-477]. (<b>G-H</b>) specimen of †<i>Carcharhinus caquetius</i> sp. nov. [3406-T-2, 3457-T-(1)] from the Angostura Formation, Ecuador. (<b>K-Q</b>) <i>Carcharhinus leucas</i>: Urumaco Fm. [K-L: AMU-CURS-360, M-N, Q: AMU-CURS-368], and Codore Fm. [O-P: AMU-CURS-622]. (<b>R-S</b>) <i>Carcharhinus limbatus</i>: Urumaco Fm. [AMU-CURS-456]. (<b>T-X</b>) <i>Carcharhinus obscurus</i>: Urumaco Fm. [T: AMU-CURS-464, U-V: AMU-CURS-463, W-X: AMU-CURS-466]. View: labial (A, F, H-I, L-M, R, V-W), lingual (C, D, G, J, K, N-Q, S-U, X), profile (B, E). Abbreviations: Fm., Formation.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582353, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g004", "stats"=>{"downloads"=>0, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Carcharhiniform_sharks_of_the_Urumaco_sequence_/1582353", "title"=>"Carcharhiniform sharks of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368729", "https://ndownloader.figshare.com/files/2368730", "https://ndownloader.figshare.com/files/2368731", "https://ndownloader.figshare.com/files/2368732"], "description"=>"<div><p>The Urumaco stratigraphic sequence, western Venezuela, preserves a variety of paleoenvironments that include terrestrial, riverine, lacustrine and marine facies. A wide range of fossil vertebrates associated with these facies supports the hypothesis of an estuary in that geographic area connected with a hydrographic system that flowed from western Amazonia up to the Proto-Caribbean Sea during the Miocene. Here the elasmobranch assemblages of the middle Miocene to middle Pliocene section of the Urumaco sequence (Socorro, Urumaco and Codore formations) are described. Based on new findings, we document at least 21 taxa of the Lamniformes, Carcharhiniformes, Myliobatiformes and Rajiformes, and describe a new carcharhiniform species (†<i>Carcharhinus caquetius</i> sp. nov.). Moreover, the Urumaco Formation has a high number of well-preserved fossil <i>Pristis</i> rostra, for which we provide a detailed taxonomic revision, and referral in the context of the global Miocene record of <i>Pristis</i> as well as extant species. Using the habitat preference of the living representatives, we hypothesize that the fossil chondrichthyan assemblages from the Urumaco sequence are evidence for marine shallow waters and estuarine habitats.</p></div>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582384, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0139230.s001", "https://dx.doi.org/10.1371/journal.pone.0139230.s002", "https://dx.doi.org/10.1371/journal.pone.0139230.s003", "https://dx.doi.org/10.1371/journal.pone.0139230.s004"], "stats"=>{"downloads"=>2, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Sawfishes_and_Other_Elasmobranch_Assemblages_from_the_Mio_Pliocene_of_the_South_Caribbean_Urumaco_Sequence_Northwestern_Venezuela_/1582384", "title"=>"Sawfishes and Other Elasmobranch Assemblages from the Mio-Pliocene of the South Caribbean (Urumaco Sequence, Northwestern Venezuela)", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368710"], "description"=>"<p>(<b>A-G</b>) <i>Aetobatus</i> cf. <i>narinari</i>: Urumaco Fm. [E-G: AMU-CURS-308] and Codore Fm. [A-B: AMU-CURS-598, and C-D: AMU-CURS-614]. (<b>H-J</b>) <i>Myliobatis</i> sp.: Urumaco Fm. [AMU-CURS-487]. (<b>K-X</b>) <i>Rhinoptera</i> sp.: Urumaco Fm. [K-P: AMU-CURS-288, and Q-S: AMU-CURS-489], and Codore Fm. [T-X: AMU-CURS-621]. (<b>Y-Z</b>) Myliobatiformes indet.: Urumaco Fm. [Y: AMU-CURS-492], and Codore Fm. [Z: AMU-CURS-634]. View: basal (A, C, G, M, O, U), dorsal (Z), labial (J, L, S, X), profile (T), lingual (F, H, P, R, V), occlusal (B, D-E, I, K, N, Q,), oblique occlusal (W), ventral (Y). Abbreviations: Fm., Formation.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582365, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g007", "stats"=>{"downloads"=>0, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Rays_of_the_Urumaco_sequence_/1582365", "title"=>"Rays of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368727"], "description"=>"<p>Data from Whitty et al. [<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0139230#pone.0139230.ref049\" target=\"_blank\">49</a>], except <i>P</i>. <i>pectinata</i> ratios which are from 14 individuals listed in Robillard and Séret [<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0139230#pone.0139230.ref116\" target=\"_blank\">116</a>], and <i>P</i>. <i>atlanticus</i> (rostral spine estimate from Casier [<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0139230#pone.0139230.ref108\" target=\"_blank\">108</a>]; measurement data from Zbyszewski [<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0139230#pone.0139230.ref117\" target=\"_blank\">117</a>]).</p><p>*Estimate based on doubling the width of the preserved half.</p><p>DS = sum of the distal and next most distal interalveolar ratios from the right and left sides; DPS score = ratio between the spacing of the most anterior two and most posterior two rostral spines; SRL = standard rostral length; SRW = standard rostral width; TRL = total rostral length; TW = tip width</p><p>† = extinct taxon.</p><p>Measurements and ratios for extant <i>Pristis</i> spp. and rostra from the Urumaco sequence.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582382, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.t001", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Measurements_and_ratios_for_extant_Pristis_spp_and_rostra_from_the_Urumaco_sequence_/1582382", "title"=>"Measurements and ratios for extant <i>Pristis</i> spp. and rostra from the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368689"], "description"=>"<p>Modified from Quiroz and Jaramillo [<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0139230#pone.0139230.ref027\" target=\"_blank\">27</a>].</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582347, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g002", "stats"=>{"downloads"=>2, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Stratigraphic_section_of_the_Socorro_Urumaco_and_Codore_formations_/1582347", "title"=>"Stratigraphic section of the Socorro, Urumaco and Codore formations.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368688"], "description"=>"<p>Fossiliferous localities of the Urumaco sequence.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582346, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g001", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Locality_map_/1582346", "title"=>"Locality map.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368718"], "description"=>"<p>(<b>A-L</b>) <i>Pristis</i> sp. rostra: Socorro Fm. [E: AMU-CURS-639 and F: AMU-CURS-241] and Urumaco Fm. [A: AMU-CURS-023, B: AMU-CURS-043, C: AMU-CURS-235, D: AMU-CURS-237, G: AMU-CURS-236, H: AMU-CURS-238 and L: AMU-CURS-251]. (<b>I-J</b>) transverse section: [I: AMU-CURS-043 and AMU-CURS-376, Urumaco Fm.]. (<b>K</b>) mineralized cartilage: [AMU-CURS-235]. (<b>L</b>) fragment of rostrum showing the depressions and foramina interpreted as ampullae of Lorenzini. View: dorsal (A-H), posterior (I-J). Abbreviations: Fm., Formation; ad, axial duct; nd: neural ducts.</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582373, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g009", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Sawfish_rostra_of_the_Urumaco_sequence_/1582373", "title"=>"Sawfish rostra of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}
  • {"files"=>["https://ndownloader.figshare.com/files/2368693"], "description"=>"<p>(<b>A-H</b>)</p>", "links"=>[], "tags"=>["miocene", "Other Elasmobranch Assemblages", "Urumaco stratigraphic sequence", "Urumaco sequence", "middle Pliocene section"], "article_id"=>1582349, "categories"=>["Uncategorised"], "users"=>["Jorge D. Carrillo-Briceño", "Erin Maxwell", "Orangel A. Aguilera", "Rodolfo Sánchez", "Marcelo R. Sánchez-Villagra"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0139230.g003", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Lamniform_and_carcharhiniform_sharks_of_the_Urumaco_sequence_/1582349", "title"=>"Lamniform and carcharhiniform sharks of the Urumaco sequence.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2015-10-21 03:50:48"}

PMC Usage Stats | Further Information

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  • {"unique-ip"=>"12", "full-text"=>"12", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"2", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"9"}
  • {"unique-ip"=>"5", "full-text"=>"5", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"12"}
  • {"unique-ip"=>"4", "full-text"=>"4", "pdf"=>"3", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"2"}
  • {"unique-ip"=>"4", "full-text"=>"4", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"3"}
  • {"unique-ip"=>"9", "full-text"=>"9", "pdf"=>"2", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"4"}
  • {"unique-ip"=>"12", "full-text"=>"11", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"5"}
  • {"unique-ip"=>"7", "full-text"=>"6", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"1", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"8"}
  • {"unique-ip"=>"14", "full-text"=>"11", "pdf"=>"6", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"9"}
  • {"unique-ip"=>"5", "full-text"=>"6", "pdf"=>"0", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"10"}

Relative Metric

{"start_date"=>"2015-01-01T00:00:00Z", "end_date"=>"2015-12-31T00:00:00Z", "subject_areas"=>[]}
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