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Geologic Unit: Britton
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  • Usage in publication:
    • Britton Formation*
  • Modifications:
    • Biostratigraphic dating
  • AAPG geologic province:
    • Ouachita folded belt
Publication:

Cobban, W.A., 1988, Tarrantoceras Stephenson and related ammonoid genera from Cenomanian (Upper Cretaceous) rocks in Texas and the Western Interior of the United States: U.S. Geological Survey Professional Paper, 1473, 51 p.


Summary:

Is formation in Eagle Ford Group in north-central TX. Is assigned a middle late Cenomanian (Late Cretaceous) age based on presence of the ammonite SUMITOCERAS CONLINI from a collection in Ellis Co, TX in the Ouachita tectonic belt province. Fauna places unit in SCIPONOCERAS GRACILE zone.

Source: GNU records (USGS DDS-6; Denver GNULEX).


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 ([ ]).

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