Evolution Of Dinosaurs
Dinosaurs evolved from the archosaurs 232-234 Ma (million years ago) in the Ladinian age, the latter part of the middle Triassic. Dinosauria is a well-supported clade, present in 98% of bootstraps. It is diagnosed by many features including loss of the postfrontal on the skull and an elongate deltopectoral crest on the humerus.
Read more about Evolution Of Dinosaurs: From Archosaurs To Dinosaurs, Earliest Dinosaurs, Saurischia, Ornithischia, Fossil Record, Biogeography, Extinction
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