USGS Mesozoic M8611, east of Pigeon Point: Middle Campanian, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Aporrhaidae
Anchura aff. falciformis (Gabb 1864)
    = Anchura phaba n. sp. Elder and Saul 1996
Elder and Saul 1996
Gastropoda - Neogastropoda - Perissityidae
Christitys cf. martini Popenoe and Saul 1987
see common names

Geography
Country:United States State/province:California County:San Mateo
Coordinates: 37.2° North, 122.4° West (view map)
Paleocoordinates:43.5° North, 92.1° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Middle Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Stratigraphy
Formation:Pigeon Point
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified sandstone
Environment:transition zone/lower shoreface
Geology comments: Presence of hummocky cross-stratification suggests offshore-transition/lower shoreface environment
Taphonomy
Modes of preservation:body,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Metadata
Database number:144762
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2013-05-17 07:55:14 Last modified:2015-04-04 10:45:55
Access level:the public Released:2013-05-17 07:55:14
Creative Commons license:CC BY
Reference information

Primary reference:
46852. W. P. Elder and L. R. Saul. 1993. Paleogeographic implications of molluscan assemblages in the Upper Cretaceous (Campanian) Pigeon Point Formation, California. In G. Dunn, K. McDougall (eds.), Mesozoic Paleogeography of the Western United States - II. Pacific Section SEPM Book 71:171-186 [M. Clapham/M. Clapham/M. Clapham]

Secondary references:

261 W. P. Elder and L. R. Saul. 1996. Taxonomy and biostratigraphy of Coniacian through Maastrichtian Anchura (Gastropoda; Aporrhaiidae) of the North American Pacific slope. Journal of Paleontology 70(3):381-399 [M. Patzkowsky/K. Layou/M. Clapham]