Wahweap Wash, UT (U1-13) (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: marine; lithified, burrowed, gray, calcareous shale

• Claystone, dark 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.

Size class: macrofossils

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 3329: authorized by Charles Marshall, entered by Sofy Low on 29.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Scleractinia - Caryophylliidae
"Platycyathus sp." = Trochocyathus (Platycyathus)
"Platycyathus sp." = Trochocyathus (Platycyathus) Fromentel 1863 stony coral
Gastropoda
 Sorbeoconcha - Aporrhaidae
Drepanocheilus ruidium
Drepanocheilus ruidium snail
originally entered as "Drepanochilus ruidium"
Bivalvia
 Lucinida - Lucinidae
Lucina sp.
Lucina sp. Bruguière 1797 clam
 Pholadida - Corbulidae
Corbula sp.
Corbula sp. Bruguière 1789 clam
 Myalinida - Inoceramidae
Inoceramidae indet., Inoceramus ? tenuistriatus
Inoceramidae indet. Giebel 1852 clam
originally entered as "informal Inoceramid indet."; changed by JA 21.2.07
Inoceramus ? tenuistriatus clam
"tenuistriatus (?)" - originally entered as "Inoceramus tenuistriatus (?)"
 Ostreida - Gryphaeidae
Pycnodonte newberryi, Exogyra acroumbonata
Cephalopoda
 Ammonoidea -
Ammonoidea indet.
Ammonoidea indet. ammonite
originally entered as "Ammonite"; changed by JA 30.6.04
 Ammonitida - Placenticeratidae
Placenticeras sp.
Placenticeras sp. Meek 1876 ammonite