UCMP loc. B-2040, dam excavation on Putah Creek: Turonian, California
collected by A. C. Hestmark

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Acanthoceratidae
Romaniceras aff. inerme
Romaniceras n. sp. (?) aff. R. inerme
see common names

Geography
Country:United States State/province:California County:Napa
Coordinates: 38.5° North, 120.1° West (view map)
Paleocoordinates:41.0° North, 83.1° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Turonian 10 m.y. bin: Cretaceous 6
Key time interval: Turonian
Age range of interval: 93.9 - 89.8 m.y. ago
Stratigraphy
Formation:Venado
Stratigraphic resolution:group of beds
Stratigraphy comments: Str. position: Greenish conglomerate in the lower part of the sandstone unit, forming the ridge of Vaca Mountains. This was referred to the Venado sandstone by KIRBY(1943).
Age: Turonian
Lithology and environment
Primary lithology:green conglomerate
Secondary lithology: sandstone
Includes fossils?Y
Lithology description: Greenish conglomerate in the lower part of the sandstone unit,
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Collectors:A. C. Hestmark
Metadata
Database number:225930
Authorizer:J. Marcot Enterer:J. Marcot
Research group:marine invertebrate
Created:2022-06-08 11:42:15 Last modified:2022-06-08 11:42:15
Access level:the public Released:2022-06-08 11:42:15
Creative Commons license:CC BY
Reference information

Primary reference:
29214. T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy]