“ | This isn't dangerous, but it's surely one of the most preposterous reptiles ever. Tanystropheus. Great long neck, great long tail. There's hardly any body at all. | „ |
— Allen Johnson, about Tanystrohpeus in New Blood II: Marine Reptiles |
Tanystropheus (name meaning "Long Hinged") is a genus of archosauromorph marine reptile that originated during the Middle Triassic period in what is now North America, Europe, and Asia. Measuring 6 meters long, its most striking feature was its almost-impossibly long neck and tail that almost defied the laws of physics.
In the Series 2 episode "New Blood II: Marine Reptiles", a group of Tanystropheus were brought to the park from Late Triassic Arizona, 220 million years ago. They reside in the Primeval Aquarium Enclosure.
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Tanystropheus skeleton