CAS 29118, Mustang Creek (Cretaceous of the United States)

Where: Merced County, California (37.2° N, 121.1° W: paleocoordinates 43.3° N, 96.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mustang Creek Member (Moreno Formation), Maastrichtian (72.1 - 66.0 Ma)

• Originally misentered as Merced formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, sandy limestone

Size class: macrofossils

Collected by A. Bennison; reposited in the CAS

Primary reference: W. P. Elder and J. W. Miller. 1993. Map and checklists of Jurassic and Cretaceous macrofossil localities within the San Jose 1:100,000 Quadrangle, California, and discussion of paleontological results. United States Geological Survey Open-File Report 93-503:1-49 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 185758: authorized by Matthew Clapham, entered by Matthew Clapham on 12.05.2017, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida -
Cephalopoda
 Ammonitida - Pachydiscidae
Pachydiscus (Pachydiscus) sp.2 Zittel 1884 ammonite
 Ammonitida - Baculitidae
Baculites sp.2, "Baculites columna" = Trachybaculites columna2
Baculites sp.2 Lamarck 1799 ammonite
"Baculites columna" = Trachybaculites columna2 Morton 1834 ammonite
 Ammonitida - Diplomoceratidae
? Glyptoxoceras cf. subcompressum2 Forbes 1846 ammonite
Bivalvia
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Carditida - Astartidae
"Opisoma pacifica n. sp." = Opis (Hesperopis) triangulata1
"Opisoma pacifica n. sp." = Opis (Hesperopis) triangulata1 Cooper 1894 clam
Gastropoda
 Heterostropha - Ringiculidae
 Heterostropha - Architectonicidae
? Margaritella sp. Meek and Hayden 1860 snail
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Neogastropoda - Fasciolariidae
? Drilluta sp. Wade 1916 snail
 Neogastropoda - Perissityidae
Perissityidae indet. Popenoe and Saul 1987 snail
? Zinsitys sp. Saul 1988 snail
 Sorbeoconcha - Aporrhaidae
Pyktes sp. Popenoe 1983 snail