Tetrapodophis (Greek meaning "four-footed snake") is an extinct genus of lizard from the Early Cretaceous (Aptian) aged Crato Formation of Brazil. It has an elongate snake-like body, with four limbs. Tetrapodophis has been considered by some authors to be one of the oldest members of Ophidia (snakes and their extinct relatives).[1][2][3] However, this classification has been disputed by some other authors,[4][5][6] who identify Tetrapodophis as a dolichosaurid much less closely related to snakes.
^Lee, Michael S. Y.; Palci, Alessandro; Jones, Marc E. H.; Caldwell, Michael W.; Holmes, James D.; Reisz, Robert R. (1 November 2016). "Aquatic adaptations in the four limbs of the snake-like reptile Tetrapodophis from the Lower Cretaceous of Brazil". Cretaceous Research. 66: 194–199. Bibcode:2016CrRes..66..194L. doi:10.1016/j.cretres.2016.06.004. ISSN0195-6671.
^Cite error: The named reference :1 was invoked but never defined (see the help page).