William Stout Madtsoia
Madtsoia is an extinct genus of madtsoiid snake. It is known from the Eocene of Argentina (M. bai), the Paleocene of Brazil (M. camposi), the Late Cretaceous (Campanian) of Spain (M. laurasiae), the Late Cretaceous of India (M. pisdurensis), and the Late Cretaceous (Campanian-Maastrichtian) of Madagascar and possibly Niger (M. madagascariensis).

The Land Before Time

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In The Land Before Time X: The Great Longneck Migration, a stylistic, imaginary Madtsoia attacks Petrie, as he describes "a front that bites" and "a back that stings" in the song 'Adventuring'. As the latter lyric implies, it is depicted with a thagomizer; which the real creature did not possess.

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