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Named By: Kuhn in 1964
Time Period: Early Triassic, 247.5-247.2 Ma
Location: Germany, Lower Saxony
Size: Uncertain due to incomplete remains. but sail is roughly 1.4 meters long
Diet: Uncertain, but presumed carnivore
Fossil(s): Dorsal and caudal vertebrae, ribs and shoulder girdle preserved on two slabs
Classification: | Chordata | Reptilia | Archosauria | Crurotarsi | Rauisuchia | Paracrocodylomorpha | Poposauroidea | Ctenosauriscidae |
Also known as: | Ctenosaurus koenei |

Ctenosauriscus is an extinct genus of sail-backed poposauroid archosaur from Early Triassic deposits of Lower Saxony in northern Germany. It gives its name to the family Ctenosauriscidae, which includes other sail-backed poposauroids such as Arizonasaurus. Fossils have been found in latest Olenekian deposits around 247.5-247.2 million years old, making it one of the first known archosaurs.

Read more about Ctenosauriscus at Wikipedia
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