Comanchean

Tanımlar (İngilizce)

1. özel isim A period of the Mesozoic era, between the Jurassic and the Upper Cretaceous periods, lasting from 145–100.5 millions of years ago.

   “There is a very general unconformity and break between the Lower and Upper Cretaceous; this has led Chamberlin and Salisbury to suggest that the Lower Cretaceous should be regarded as a separate period with the title "Comanchean."”