Toraidhean rannsachaidh
Cha do fhreagair toradh sam bith ri d' iarrtas.
Cruthaich an duilleag "Paleontology" air an uicidh seo!
- Naish, Darren; Dyke, Gareth J. (May 2014). "Morphological Clocks in Paleontology, and a Mid-Cretaceous Origin of Crown Aves" (PDF). Systematic Biology