Otodus auriculatus

Otodus auriculatus; Temporal range: Eocene-Oligocene, ~
	Teeth of a O. auriculatus.
	Teeth of Carcharodon disaurus (jr syn. C. auriculatus).
Scientific classification
Kingdom:	Animalia
Division:	Selachii
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Lamniformes
Family:	†Otodontidae
Genus:	†Otodus; Agassiz, 1835
Species:	O. auriculatus
Binomial name
	Otodus auriculatus; Blainville, 1818
Synonyms
	Carcharocles auriculatus Ameghino, 1907; Carcharodon auriculatus Agassiz, 1837; Carcharodon disaurus; Carcharias auriculatus Blainville, 1818;

Otodus auriculatus meaning "Small ear-shapped tooth"^[1] from Ancient Greek ὠτ (ōt, meaning "ear") and ὀδούς (odoús, meaning "tooth") – thus, "ear-shaped tooth" and "auriculata" or "lathus" meaning small, is an extinct species of megatooth shark that lived in Eocene to Oligocene. He is a related species on the famous megalodon.

Size

The O. auriculatus was a large than the Great White Shark (Carcharodon carcharias), the largest specimens measured 9.5 to 10 meters (30-33 ft) in lenght.^[2] The smaller individuals measured 4-4.5 metres long and is compared on the Tiger shark (Galeocerdo cuvier) and the current Mako Shark (Isurus oxyrinchus).

References

↑ Shimada, Kenshu; and Ward, David J. (2017-07-04). "A new elusive otodontid shark (Lamniformes: Otodontidae) from the lower Miocene, and comments on the taxonomy of otodontid genera, including the 'megatoothed' clade". Historical Biology. 29 (5): 704–714. doi:10.1080/08912963.2016.1236795. ISSN 0891-2963. {{cite journal}}: |first2= missing |last2= (help); |first3= missing |last3= (help); |first4= missing |last4= (help)CS1 maint: multiple names: authors list (link)
↑ Kast, Emma R.; Griffiths, Michael L.; Kim, Sora L.; Rao, Zixuan C.; Shimada, Kenshu; Becker, Martin A.; Maisch, Harry M.; Eagle, Robert A.; Clarke, Chelesia A.; Neumann, Allison N.; Karnes, Molly E. (2022-06-24). "Cenozoic megatooth sharks occupied extremely high trophic positions". Science Advances. 8 (25): eabl6529. doi:10.1126/sciadv.abl6529. ISSN 2375-2548. PMC 9217088. PMID 35731884.

[1] Shimada, Kenshu; and Ward, David J. (2017-07-04). "A new elusive otodontid shark (Lamniformes: Otodontidae) from the lower Miocene, and comments on the taxonomy of otodontid genera, including the 'megatoothed' clade". Historical Biology. 29 (5): 704–714. doi:10.1080/08912963.2016.1236795. ISSN 0891-2963. {{cite journal}}: |first2= missing |last2= (help); |first3= missing |last3= (help); |first4= missing |last4= (help)CS1 maint: multiple names: authors list (link)

[2] Kast, Emma R.; Griffiths, Michael L.; Kim, Sora L.; Rao, Zixuan C.; Shimada, Kenshu; Becker, Martin A.; Maisch, Harry M.; Eagle, Robert A.; Clarke, Chelesia A.; Neumann, Allison N.; Karnes, Molly E. (2022-06-24). "Cenozoic megatooth sharks occupied extremely high trophic positions". Science Advances. 8 (25): eabl6529. doi:10.1126/sciadv.abl6529. ISSN 2375-2548. PMC 9217088. PMID 35731884.

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