Squalicorax
| Squalicorax | ||||||||||||
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Squalicorax sp. , graphic reconstruction |
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| Temporal occurrence | ||||||||||||
| Chalk ( Albium to Maastrichtian ) | ||||||||||||
| 112.9 to 66 million years | ||||||||||||
| Locations | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Squalicorax | ||||||||||||
| Cappetta , 1987 |
Squalicorax ("Hairabe") is an extinct genus of the mackerel shark species that lived during the Cretaceous Period .
Like the majority of extinct shark species, Squalicorax is best known in the form of fossil teeth . In the US state of Kansas , however, a 1.9 meter long skeleton of the species S. falcatus was found that was anatomically preserved . The total length of S. pristodontus was estimated to be up to five meters based on the size of the teeth .
Squalicorax's teeth had a rectangular base, the crown was in the shape of a rose thorn and was finely serrated. They resembled those of the recent tiger shark . Squalicorax was probably a predatory fish , but fossilized teeth in the metatarsal bone of a young hadrosaur and in the vertebra of a mosasaur suggest that Squalicorax ate opportunistically and also ate carrion .
species
- Squalicorax dalinkevichiusi (Glikman & Shvazhaite 1971)
- Squalicorax falcatus (Agassiz 1843)
- Squalicorax kaupi (Agassiz 1843)
- Squalicorax primaevus (Dalinkevicius 1935)
- Squalicorax primigenius Landemaine 1991
- Squalicorax pristiodontus (Agassiz 1843)
- Squalicorax pristodontus (Agassiz 1843) ( type species )
- Squalicorax volgensis Glikman 1971
