Wahweap Wash, UT (U1-4): Late/Upper Cenomanian, Utah

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Gastropoda indet. Cuvier 1797
1 specimen
originally entered as "Gastropod indet."
Polychaeta - Sabellida - Serpulidae
Serpula intrica
8 specimens
Bivalvia
Bivalvia indet. Linnaeus 1758
1 specimen
originally entered as "Infaunal bivalve"
Bivalvia - Solemyida - Solemyidae
Solemya obscura
1 specimen
Bivalvia - Ostreida - Gryphaeidae
Exogyra levis
19 specimens
Pycnodonte newberryi
14 specimens
Gryphaeostrea sp. Conrad 1865
2 specimens
Bivalvia - Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815
2 specimens
originally entered as "Oyster spat "
Bivalvia - Pectinida - Pectinidae
Camptonectes sp. Meek 1864
3 specimens
Bivalvia - Pholadida - Corbulidae
Corbula sp. Bruguière 1789
1 specimen
Gastropoda - Naticidae
Euspira concinna
1 specimen
Gastropoda - Turritellidae
Turritella sp. Lamarck 1799
4 specimens
Cephalopoda - Ammonitida - Acanthoceratidae
Metoicoceras sp. Hyatt 1903
1 specimen
Cephalopoda - Ammonitida - Anisoceratidae
Allocrioceras sp. Spath 1926
1 specimen
see common names

Geography
Country:United States State/province:Utah County:Kane
Coordinates: 37.1° North, 111.6° West (view map)
Paleocoordinates:38.5° North, 74.4° West
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Cenomanian 10 m.y. bin:Cretaceous 5
*Period:Middle Cretaceous - Late/Upper Cretaceous *Epoch:Gallic
*International age/stage:Late/Upper Cenomanian - Late/Upper Cenomanian
Key time interval:Late/Upper Cenomanian Zone: Sciponoceras Ammonite
Age range of interval:99.60000 - 93.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Tropic Shale
Local section:U1 Local bed:4 (Unit 8)
Stratigraphic resolution:bed
Stratigraphy comments: Bed horizon is the sample number not the lithologic unit number. The lithologic unit numbers that correspond to the sample numbers given can be found in reference for collection (Elder, 87).

Lithology and environment
Primary lithology:gray,green lithified "shale"
Environment:marine indet. Tectonic setting:cratonic basin
Geology comments: Claystone, slightly silty, non-calcareous, mod. well indurated, poorly laminar.

Note: Section U1 constitutes interbedded limestones and shales, but this sedimentary structure is not reflected in the descriptions of each collection, as each is often a single bed, or a portion thereof.

Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,mechanical,field collection
Reason for describing collection:paleoecologic analysis
Collection method comments: Bulk sample disaggregated in lab.

Metadata
Database number:3289
Authorizer:C. Marshall Enterer:S. Low
Modifier:M. Clapham Research group:marine invertebrate
Created:1999-07-28 21:01:01 Last modified:2017-07-28 16:06:18
Access level:the public Released:1999-07-28 21:01:01
Creative Commons license:CC BY
Reference information

Primary reference:

93. W. P. Elder. 1987. The paleoecology of the Cenomanian-Turonian (Cretaceous) stage boundary extinctions at Black Mesa, Arizona. Palaios 2(1):24-40 [C. Marshall/S. Low/A. Clement]