Wahweap Wash, UT (U1-11) (Cretaceous of the United States)

Where: Kane County, Utah (37.1° N, 111.6° W: paleocoordinates 38.5° N, 74.4° W)

• small collection-level geographic resolution

When: Sciponoceras Ammonite zone, Tropic Shale Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)

• 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).

• bed-level stratigraphic resolution

Environment/lithology: lithified, burrowed, gray, calcareous limestone

• Limestone concretions, chalky, medium light olive gray, well indurated.

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.

Collection methods: bulk, mechanical,

• Bulk sample disaggregated in lab.

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3327: authorized by Charles Marshall, entered by Sofy Low on 29.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia indet. Linnaeus 1758 clam
"infaunal" [originally entered as "Bivalve indet."]
Gastropoda indet. Linnaeus 1758 clam
originally entered as "Gastropod indet."
 Myalinida - Inoceramidae
Inoceramidae indet. Giebel 1852 clam
originally entered as "informal Inoceramid indet."; changed by JA 21.2.07
Inoceramus pictus Sowerby 1829 clam
"pictus pictus" - originally entered as "Inoceramus pictus pictus"
 Ostreida - Arctostreidae
 Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815 oyster
originally entered as "Oyster indet."
 Pholadida - Corbulidae
Corbula sp. Bruguière 1789 clam
 Poromyida - Poromyidae
 Lucinida - Lucinidae
Lucina sp. Bruguière 1797 clam
 Stromboidea - Aporrhaidae
Perissoptera sp. Tate 1865 snail
Drepanocheilus ruidium snail
originally entered as "Drepanochilus ruidium"
Anchura sp. Conrad 1860 snail
 Naticoidea - Naticidae
Euspira concinna moon snail
Scaphopoda indet. Bronn 1862 tusk shell
originally entered as "Scaphopod "
 Ammonoidea -
Ammonoidea indet. ammonite
originally entered as "Ammonite"; changed by JA 30.6.04
 Ammonitida - Acanthoceratidae
Euomphaloceras sp. Spath 1923 ammonite
 Ammonitida - Scaphitidae
Worthoceras sp. Adkins 1928 ammonite
 Ammonitida - Baculitidae
Sciponoceras sp. Hyatt 1894 ammonite