| Title | An unusual shark assemblage from the Ladinian-Carnian interval of South China |
| Authors | Li, Jiachun Sun, Zuoyu Cuny, Gilles Ji, Cheng Jiang, Dayong Zhou, Min |
| Affiliation | Peking Univ, Dept Geol & Geol Museum, Lab Orogen Belt & Crustal Evolut, Minist Educ, 5 Yiheyuan Rd, Beijing 100871, Peoples R China Shandong Univ Sci & Technol, Coll Earth Sci & Engn, 579 Qianwangang Rd, Qingdao 266590, Shandong, Peoples R China Univ Lyon, Univ Claude Bernard Lyon 1, CNRS, ENTPE,UMR 5023 LEHNA, F-69622 Villeurbanne, France Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, 39 East Beijing Rd, Nanjing 210008, Peoples R China Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China |
| Keywords | XINGYI FAUNA NEOSELACHIAN SHARKS GUIZHOU SYNECHODONTIFORMES CHONDRICHTHYES ELASMOBRANCHII ICHTHYOSAURIA EXTINCTION EVOLUTION SPECIMEN |
| Issue Date | Oct-2021 |
| Publisher | PAPERS IN PALAEONTOLOGY |
| Abstract | A detailed taxonomic study of a diverse chondrichthyan fauna from the Ladinian-Carnian (Middle-Late Triassic) interval at Nimaigu locality in Guizhou Province, South China is presented. Six taxa are described, two of which are assigned to Elasmobranchii incertae sedis (aff. Rosaodus sp., Rosaodus xingyiensis gen. et sp. nov.) and three to the Euselachii (Euselachii gen. et sp. indet., Favusodus orientalis gen. et sp. nov., Keichouodus nimaiguensis gen. et sp. nov.), while the last one represents a possible Holocephali (aff. Arctacanthus sp.). Their stratigraphic distribution is documented on a bed-by-bed basis. This fauna is unusual because it is dominated by sharks with a cladodont-like dentition (which were barely known after the end-Permian mass extinction), and because it is almost devoid of durophagous euselachians, which makes it different from all other contemporaneous shark faunas worldwide. Transitional features are documented between 'cladodont' teeth and those of neoselachian sharks, which provide new insights into the replacement pattern of ancient sharks by modern ones. |
| URI | http://hdl.handle.net/20.500.11897/626798 |
| ISSN | 2056-2799 |
| DOI | 10.1002/spp2.1404 |
| Indexed | SCI(E) |
| Appears in Collections: | 地球与空间科学学院 造山带与地壳演化教育部重点实验室 |
