Madtsoia is an extinct genus of madtsoiid snakes. It is known from the Eocene of Argentina (M. bai), the Paleocene of Brazil (M. camposi), the Late Cretaceous (Maastrichtian) of India (M. pisdurensis), and the Late Cretaceous (Maastrichtian) of Madagascar (M. madagascariensis). The type species (M. bai) was the largest with an estimated length of , and the other three species were smaller. A long M. madagascariensis would have weighed , but an isolated specimen suggests that this species reached in maximum length.
Distribution
Fossils of Madtsoia have been found in:
Coniacian
In Beceten Formation, Niger
Campanian
Laño, Spain
Late Cretaceous (Maastrichtian) Lameta Formation, India Maevarano Formation, Madagascar
Eocene
Casamayoran Sarmiento Formation, Argentina
Itaboraian Las Flores Formation, Argentina and Itaboraí Formation, Brazil
References
Further reading
Snakes: The Evolution of Mystery in Nature by Harry W. Greene
In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods by Nicholas C. Fraser and Hans-Dieter Sues