Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary
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{"title"=>"Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary", "type"=>"journal", "authors"=>[{"first_name"=>"Nicholas R.", "last_name"=>"Longrich", "scopus_author_id"=>"13806457100"}, {"first_name"=>"David M.", "last_name"=>"Martill", "scopus_author_id"=>"7006240791"}, {"first_name"=>"Brian", "last_name"=>"Andres", "scopus_author_id"=>"14044612000"}], "year"=>2018, "source"=>"PLoS Biology", "identifiers"=>{"issn"=>"15457885", "scopus"=>"2-s2.0-85045287957", "sgr"=>"85045287957", "pui"=>"621585693", "isbn"=>"1111111111", "doi"=>"10.1371/journal.pbio.2001663"}, "id"=>"43cd627f-799b-33b0-8490-e449123c350e", "abstract"=>"Pterosaurs were the first vertebrates to evolve powered flight and the largest animals to ever take wing. The pterosaurs persisted for over 150 million years before disappearing at the end of the Cretaceous, but the patterns of and processes driving their extinction remain unclear. Only a single family, Azhdarchidae, is definitively known from the late Maastrichtian, suggesting a gradual decline in diversity in the Late Cretaceous, with the Cretaceous– Paleogene (K-Pg) extinction eliminating a few late-surviving species. However, this appar- ent pattern may simply reflect poor sampling of fossils. Here, we describe a diverse pterosaur assemblage from the late Maastrichtian of Morocco that includes not only Azhdarchidae but the youngest known Pteranodontidae and Nyctosauridae. With 3 families and at least 7 species present, the assemblage represents the most diverse known Late Creta- ceous pterosaur assemblage and dramatically increases the diversity of Maastrichtian pterosaurs. At least 3 families—Pteranodontidae, Nyctosauridae, and Azhdarchidae—per- sisted into the late Maastrichtian. Late Maastrichtian pterosaurs show increased niche occu- pation relative to earlier, Santonian-Campanian faunas and successfully outcompeted birds at large sizes. These patterns suggest an abrupt mass extinction of pterosaurs at the K-Pg boundary.", "link"=>"http://www.mendeley.com/research/late-maastrichtian-pterosaurs-north-africa-mass-extinction-pterosauria-cretaceouspaleogene-boundary", "reader_count"=>10, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>1, "Other"=>2, "Student > Master"=>1, "Student > Bachelor"=>4}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>1, "Other"=>2, "Student > Master"=>1, "Student > Bachelor"=>4}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Agricultural and Biological Sciences"=>5, "Computer Science"=>1, "Earth and Planetary Sciences"=>3}, "reader_count_by_subdiscipline"=>{"Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>3}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>5}, "Computer Science"=>{"Computer Science"=>1}, "Unspecified"=>{"Unspecified"=>1}}, "group_count"=>0}

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