dinosaurs

  1. Andox88

    Evolution of dinosaurs

    Dinosaurs evolved within a single lineage of archosaurs 232-234 million years ago in the Ladinian age, the latter part of the middle Triassic. Dinosauria is a wellsupported clade, present in 98% of bootstraps. It is diagnosed by many features including loss of the postfrontal on the skull and an...
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