Archosaurs
Newly named basal archosauromorphs
Newly named non-avian dinosaurs
Synapsids
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Cyonasua
''Cyonasua'' (meaning "dog-coati" in Greek) is an extinct genus of procyonid from the Late Miocene to Middle Pleistocene of South America. Fossils of ''Cyonasua'' have been found in Argentina ( Ituzaingó, Epecuén, Huayquerías, Monte Hermoso, ...
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, Ameghino
, 5 Million years ago
,
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, It was one of the first placental mammals that came from North America.
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References