Thadeosaurus

Thadeosaurus
Temporal range: Late Permian,
Holotype specimen; natural mold (A, C), and silicone cast (C, D)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Parapleurota
Clade: Neodiapsida
Family: Tangasauridae
Genus: Thadeosaurus
Carroll, 1981
Type species
Thadeosaurus colcanapi
Carroll, 1981

Thadeosaurus is an extinct genus of diapsid reptiles from the late Permian Lower Sakamena Formation (Sakamena Group) of Madagascar. The genus contains a single species, Thadeosaurus colcanapi, known from several specimens preserved as natural molds.