- Usage in publication:
-
- Dragonian age
- Modifications:
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- Original reference
- AAPG geologic province:
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- Paradox basin
Summary:
Pg. 9, pl. 1. Dragonian age. Provincial time term, based on Dragon local fauna in North Horn formation, Dragon Canyon, Emery County, Utah, principally from western half of sec. 8, T. 19 S., R. 6 E. Covers interval between Paleocene Puercan (older) and Torrejonian ages. [In lower part of Paleocene; = DRACOLAENUS faunal zone.] Definition of 18 provincial time terms, based on mammal-bearing units, for North American continental Tertiary. [For sequence see under Puercan.]
Source: US geologic names lexicon (USGS Bull. 1200, p. 1155).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).