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== Ecology == |
== Ecology == |
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whale sharks on plankton, small crustaceans, fish and squid.<ref>{{Cite web |title=elasmo.com |url=http://www.elasmo.com/frameMe.html?file=genera/cenozoic/sharks/palaeorhincodon.html&menu=bin/menu_genera-alt.html |access-date=2025-06-01 |website=www.elasmo.com}}</ref> |
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Palaeorhincodon likely shared its habitat with [[sharks]] and [[rays]], such as ”[[Otodus obliquus]]” and ”[[Heliobatis radians]]”, for example.{{cn}} |
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==References== |
==References== |
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Latest revision as of 21:42, 29 November 2025
Extinct genus of sharks
Palaeorhincodon (meaning “Old snout tooth”) is an extinct genus of prehistoric whale shark from the Paleocene and Eocene periods. It had a similar distribution range of modern whale sharks with teeth from Palaeorhincodon being found in warm water areas such as North America, Europe, Asia, Belgium[citation needed] and Africa.[2] It’s teeth are very small being only 3 millimeters in height. There are up to 300 files of teeth in each jaw of Palaeorhincodon.[3]
Palaeorhincodon was formelly named in 1975, by J. Herman and the firts named species is the type, P. wardi. Before that, the genre was known informally, but it was formally described shortly afterward. In 1952, “Squatirhina” dartevallei was named; however, shortly after the naming of P. wardi (in 1997), it was reclassified into the same genus. In the same year, was been named a three species, P. daouii.[4]
A fourth possible species found in Belgium has never been formally named and dates from the Ypresian. It is believed that it was formally described only in 2001 (by Adnet and Cappeta) and named P. ypresiensis. However, there is no strong evidence for this. This means that it is a nomen nudum (a name not formally used).[further explanation needed]
Palaeorhicodon presumedly behaved similarly to extant whale sharks, feeding on plankton, and larger pelagic animals like small crustaceans, fish and squid.[5]
