Wahweap Wash, UT (U1-16): Late/Upper Cenomanian, Utah

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
Bivalvia indet. Linnaeus 1758
1 specimen
"infaunal" [originally entered as "Bivalve indet."]
Bivalvia - Ostreida - Gryphaeidae
Pycnodonte newberryi
8 specimens
Bivalvia - Ostreida - Pteriidae
Phelopteria sp. Stephenson 1953
27 specimens
Bivalvia - Pectinida - Pectinidae
Camptonectes sp. Meek 1864
2 specimens
Bivalvia - Myalinida - Inoceramidae
Inoceramidae indet. Giebel 1852
132 specimens
originally entered as "informal Inoceramid indet."; changed by JA 21.2.07
Inoceramus flavus
1 specimen
"flavus pictoides" - originally entered as "Inoceramus flavus pictoides"
Inoceramus flavus
2 specimens
"flavus flavus" - originally entered as "Inoceramus flavus flavus"
Inoceramus ? tenuistriatus
2 specimens
"tenuistriatus (?)" - originally entered as "Inoceramus tenuistriatus (?)"
Inoceramus pictus Sowerby 1829
7 specimens
recombined as Inoceramus (Inoceramus) pictus
"pictus pictus" - originally entered as "Inoceramus pictus pictus"
Mytiloides aff. submytiloides
6 specimens
"aff. M. submytiloides" - originally entered as "Mytiloides aff. M. submytiloides"
Bivalvia - Carditida - Astartidae
? Astarte sp. Sowerby 1816
112 specimens
originally entered as "Astarte (?) sp."
Bivalvia - Lucinida - Lucinidae
Lucina sp. Bruguière 1797
7 specimens
Gastropoda - Aporrhaidae
Drepanocheilus ruidium
165 specimens
originally entered as "Drepanochilus ruidium"
Gastropoda - Naticidae
Euspira concinna
2 specimens
Cephalopoda - Ammonitida - Acanthoceratidae
Neocardioceras sp. Spath 1926
59 specimens
Kamerunoceras sp. Reyment 1954
2 specimens
Cephalopoda - Ammonitida - Baculitidae
Sciponoceras sp. Hyatt 1894
2 specimens
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: Neocardioceras 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:16 (Unit 20)
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:burrows,gray lithified calcareous "shale"
Environment:marine indet. Tectonic setting:cratonic basin
Geology comments: Claystone, slightly silty, olive gray, mod. 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:3332
Authorizer:C. Marshall Enterer:S. Low
Modifier:M. Clapham Research group:marine invertebrate
Created:1999-07-29 20:09:36 Last modified:2017-07-28 16:07:47
Access level:the public Released:1999-07-29 20:09:36
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]