| 词条 | Palaeocarcharodon | |
| 释义 |
| fossil_range = {{fossilrange|Paleocene}} | image = Cretoxyrhinidae - Palaeocarcharodon orientalis.JPG | image_caption = Fossil teeth of Palaeocarcharodon orientalis (the largest three) from Khouribga (Morocco), along side teeth of Otodus | genus = Palaeocarcharodon | parent_authority = Casieer, 1960 | species = orientalis | authority = (Sinzow, 1899) | synonyms = }}Palaeocarcharodon, also known as the pygmy white shark, is a genus of shark within the family Otodontidae[1] that lived about 61.7 to 55.8 Ma during the Paleocene. It currently contains contains a sole species P. orientalis.[2] DescriptionTeeth of Palaeocarcharodon are triangular, labio-lingually compressed, with quite irregular serrations and serrate lateral cusplets. They can reach a size of about {{convert|3|-|6|cm}}.[3] References1. ^{{cite journal|author1= Mikael Siverson|author2= Johan Lindgren|author3=Michael G. Newbrey|author4=Peter Cederström|author5=Todd D. Cook|title=Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type|year=2013|journal=Acta Palaeontologica Polonica|volume=60|issue=2|pages=339-384|doi=10.4202/app.2012.0137|url=http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1027.6182&rep=rep1&type=pdf}} {{Taxonbar|from=Q19598334}}{{paleo-shark-stub}}2. ^{{cite journal|authors=Kordikova, E. G., Polly, P. D., Alifanov, V. A., Roček, Z., Gunnell, G. F., & Averianov, A. O.|year=2001|title= Small vertebrates from the Late Cretaceous and early Tertiary of the northeastern Aral Sea Region, Kazakhstan.|journal= Journal of Paleontology|volume=75|issue=2|pages=390–400|doi=10.1666/0022-3360(2001)075<0390:svftlc>2.0.co;2}} 3. ^G. R. Case. - Palaeocarcharodon Orientalis (SINZOW) (Neoselachii: Cretoxyrhinidae), from the Paleocene of Maryland - Lab. de Paléontologie des Vertébrés, 1989 6 : Otodontidae|Prehistoric fish of Africa|Prehistoric fish of Asia|Prehistoric fish of North America|Fossils of the United States|Paleocene sharks |
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