411 REFERENCE · Wiktionary
Comanchean
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From en Comanche -ean a city in Texas.
Proper noun
A period of the Mesozoic era, between the Jurassic and the Upper Cretaceous periods, lasting from 145–100.5 millions of years ago.
en Early Cretaceous Lower Cretaceous
7 Cretaceous System 415 https://archive.org/details/EB1911WMF/VOL07_CONSTANTINE-_PAVLOVICH-DEMIDOV/page/n434/mode/1up 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." on
References