Stenopterygius

Period of life: 183–179 MYA

Era/period: Jurassic

Habitat: Sea and ocean waters

Length: 3-4 m

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Stenopterygius is a small 3-metre ichthyosaur which inhabited Europe salt-water basins 183-179 million years ago. The name means "narrow fin". Their diet included fish and mussels.

The Stenopterygius looked similar to sharks and dolphins, had a beaked skull and jaws packed with sharp teeth. Limbs which over time evolved into fins, one caudal and the other dorsal triangle. David Martill in 1987 questioned the existence of a dorsal diving organ.

One of the earliest recovered Stenopterygius fossils had a fin like imprint on its back. Martill assumed the imprint to be simply a torn skin flap. As the reptile had hind limbs, the scientist stated that the dinosaur used hind limbs, instead of a dorsal fin as a rudder.

Being a viviparous reptile, it delivered its offspring into the water and, like cetaceans, a tail came first for spawns did not drown.

Order: Ichthyosaurs

Diet: Fish

Length: 3-4 m

Weight: 100 kg

This dinosaur comes with
Interesting facts
Puzzles
Tests
Voice acting
3D model "skin"
3D model "muscles"
3D model "skeleton"

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