USGS Mesozoic Locality 905, Cow Creek: Hauterivian, Oregon
collected by W.Q. Brown 1892

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Malacostraca - Decapoda - Nephropidae
Hoploparia riddlensis n. sp. Feldmann 1974
Cephalopoda - Phylloceratida - Phylloceratidae
Phyllopachyceras trinitense (Anderson 1938)
synonym of Phyllopachyceras infundibulum
Cephalopoda - Ammonitida - Polyptychitidae
Wellsia oregonensis (Anderson 1938)
recombined as Homolsomites oregonensis
see common names

Geography
Country:United States State/province:Oregon County:Douglas
Coordinates: 43.0° North, 123.4° West (view map)
Paleocoordinates:41.8° North, 72.1° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Hauterivian 10 m.y. bin:Cretaceous 2
Key time interval:Hauterivian
Age range of interval:132.60000 - 125.77000 m.y. ago
Stratigraphy
Formation:Days Creek
Stratigraphic resolution:member
Stratigraphy comments: lobsters collected from upper member of Days Creek Formation.
Lithology and environment
Primary lithology:fine sandstone
Secondary lithology:concretionary siltstone
Includes fossils?Y
Lithology description: "Alternating units of fine grained sandstone and siltstone containing small limestone concretions. The matrix surrounding the lobsters is very fine quartz wacke."
Environment:submarine fan Tectonic setting:forearc basin
Taphonomy
Modes of preservation:body,concretion,original chitin
Size of fossils:macrofossils,microfossils
Articulated whole bodies:many
Associated major elements:many
Temporal resolution:time-averaged
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:surface (float),surface (in situ),mechanical
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:W.Q. Brown Collection dates:1892
Metadata
Database number:45672
Authorizer:C. Schweitzer Enterer:C. Schweitzer
Modifier:M. Uhen Research group:decapod,marine invertebrate
Created:2004-11-22 10:34:25 Last modified:2019-05-31 16:51:34
Access level:the public Released:2004-11-22 10:34:25
Creative Commons license:CC BY
Reference information

Primary reference:
12044. R. M. Feldmann. 1974. Hoploparia riddlensis, a new species of lobster (Decapoda: Nephropidae) from the Days Creek Formation (Hauterivian, Lower Cretaceous) of Oregon. Journal of Paleontology 48(3):586-593 [C. Schweitzer/C. Schweitzer/C. Schweitzer]