Massetognathus was a herbivorous non-mammalian cynodont from the Chañares Formation, which is of ladinian age. It was about 50cm, and was the most common tetrapod from the above mentioned formation. it as two species: M. ochagaviae, and M. pascuali.[1][2][3][4]


  1. A. S. Romer. 1967. The Chañares (Argentina) Triassic reptile fauna. III. Two new gomphodonts, Massetognathus pascuali and M. teruggii. Breviora 264:1-25

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