Tangasauridae
| Tangasauridae Temporal range: Late Permian-Early Triassic,
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| Holotype of Thadeosaurus colcanapi | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Neodiapsida |
| Family: | †Tangasauridae Piveteau, 1926 |
| Subgroups | |
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Tangasauridae is an extinct family of diapsids known from fossils found in Late Permian to Early Triassic rocks in Madagascar, Kenya and Tanzania. Fossils have been found of members of this family in different stages of ontogenic development. Material from the early Triassic Middle Sakamena Formation of the Morondava Basin of Madagascar indicates that the Tangasauridae survived the Permian-Triassic extinction event.