Palaeocarcharodon
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 a sole species P. orientalis.[2]
Palaeocarcharodon | |
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Fossil teeth of Palaeocarcharodon orientalis (the largest three) from Khouribga (Morocco), alongside teeth of Otodus | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Order: | Lamniformes |
Family: | †Otodontidae |
Genus: | †Palaeocarcharodon Casieer, 1960 |
Species: | †P. orientalis |
Binomial name | |
†Palaeocarcharodon orientalis (Sinzow, 1899) | |
Description
Teeth of Palaeocarcharodon are triangular, labio-lingually compressed, with quite irregular serrations and serrate lateral cusplets. They can reach a size of about 3–6 centimetres (1.2–2.4 in).[3]
- Tooth of Palaeocarcharodon from Atlas mountain in Morocco. 60 mya, long 3 cm.
References
- Mikael Siverson; Johan Lindgren; Michael G. Newbrey; Peter Cederström; Todd D. Cook (2013). "Cenomanian–Campanian (Late Cretaceous) mid-palaeolatitude sharks of Cretalamna appendiculata type". Acta Palaeontologica Polonica. 60 (2): 339–384. CiteSeerX 10.1.1.1027.6182. doi:10.4202/app.2012.0137. S2CID 58906204.
- Kordikova, E. G., Polly, P. D., Alifanov, V. A., Roček, Z., Gunnell, G. F., & Averianov, A. O. (2001). "Small vertebrates from the Late Cretaceous and early Tertiary of the northeastern Aral Sea Region, Kazakhstan". Journal of Paleontology. 75 (2): 390–400. doi:10.1666/0022-3360(2001)075<0390:svftlc>2.0.co;2.CS1 maint: uses authors parameter (link)
- G. R. Case. - Palaeocarcharodon Orientalis (SINZOW) (Neoselachii: Cretoxyrhinidae), from the Paleocene of Maryland - Lab. de Paléontologie des Vertébrés, 1989
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