Pg. 12, pl. 1. Clarendonian age. Provincial time term, based on the Clarendon local fauna (and member?), near Clarendon, Donley County, Texas. Covers the interval between the Barstovian (Miocene) and Hemphillian (Pliocene) ages. [In lower part of Pliocene; = EUCASTOR faunal zone.] Report defines 18 provincial time terms, based on mammal-bearing units, for the North American continental Tertiary. [For sequence see under Puercan.]
Source: US geologic names lexicon (USGS Bull. 1200, p. 817-818).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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