Named By: Carrol - 1981.
Classification: Chordata, Sauropsida, Eosuchia, Tangasauridae.
Species: T. colcanapi.
Size: 60 centimetres long.
Known locations: Madagascar.
Time period: Wuchiapingian of the Permian.
Fossil representation: Several specimens, but the skull is only known from a juvenile.
morphology like we see in lizards today, Thadeosaurus
had a very long
tail making up over half of its total body length. The legs were long
and had long toes terminating in claws. It is likely that as
Thadeosaurus ran, the toes would always be in
contact with the ground.
Thadeosaurus had a well developed breastbone suggesting attachments for powerful muscles in the upper body. As well as running, it may have been able to combine this strength with the claws on its long toes for climbing. Bringing all these adaptations together results in Thadeosaurus being a fast and agile predator easily capable of running its prey down.