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."
Source: wiktionary
Comanchean
Synonyms for "comanchean" (4 found)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.