Wahweap Wash, UT (U1-9) (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, bioturbated, gray, calcareous shale

• Shale, slightly silty, olive gray, mod. indurated, 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 3325: 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
Cephalopoda
 Ammonitida - Acanthoceratidae
Metoicoceras sp., Euomphaloceras sp.
Metoicoceras sp. Hyatt 1903 ammonite
Euomphaloceras sp. Spath 1923 ammonite
Gastropoda
 Cerithioidea - Turritellidae
Turritella sp.
Turritella sp. Lamarck 1799 turret shell
 Sorbeoconcha - Naticidae
Euspira concinna
Euspira concinna moon snail
 Sorbeoconcha - Cerithiopsidae
Cerithiopsis sp.
Cerithiopsis sp. Hanley 1849 snail
 Sorbeoconcha - Aporrhaidae
Drepanocheilus ruidium
Drepanocheilus ruidium snail
originally entered as "Drepanochilus ruidium"
 Opisthobranchia - Cylichnidae
Cylichna sp.
Cylichna sp. Lovén 1846 snail
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
"infaunal" [originally entered as "Bivalve indet."]
 Solemyida - Solemyidae
Solemya obscura
Solemya obscura Awning Clam
 Pholadomyida - Pholadomyidae
Pholadomya sp.
Pholadomya sp. Sowerby 1823 clam
 Pholadida - Corbulidae
Corbula sp.
Corbula sp. Bruguière 1789 clam
 Lucinida - Lucinidae
Lucina sp.
Lucina sp. Bruguière 1797 clam
 Myalinida - Inoceramidae
Inoceramidae indet., "Inoceramus pictus" = Inoceramus (Inoceramus) pictus
Inoceramidae indet. Giebel 1852 clam
originally entered as "informal Inoceramid indet."; changed by JA 21.2.07
"Inoceramus pictus" = Inoceramus (Inoceramus) pictus Sowerby 1829 clam
"pictus gracilestiatus" - originally entered as "Inoceramus pictus gracilestiatus"
 Pectinida - Plicatulidae
Plicatula sp.
Plicatula sp. Lamarck 1801 scallop
 Ostreida - Gryphaeidae
Pycnodonte newberryi, Exogyra levis
 Arcida - Parallelodontidae
Nemodon sp.
Nemodon sp. Conrad 1869 clam
Mesostoma
  -
Mesostoma sp.
Mesostoma sp. Ehrenberg 1837