adaptada a climas más templados

This adaptation makes it a key species for understanding the morphological and ecological diversity of Phocoenidae during the Pliocene

Snout-tail base length 183 mm

begins to retreat

en lo que hoy es la Patagonia argentina

Mononykus olecranus mixotoxodon adaptada a climas más templadosMononykus olecranus was a small alvarezsaurid theropod dinosaur from the Late Cretaceous of Mongolia, known from fossil remains recovered from deposits in the Gobi Desert. Originally described in the early 1990s by Perle, Norell, Chiappe and Clark, this taxon quickly became recognised as one of the most unusual forms among maniraptoran dinosaurs because of the extreme reduction of its forelimbs and the presence of a single functional claw on each