Where: Stanislaus County, California (37.2° N, 121.2° W: paleocoordinates 37.0° N, 81.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Panoche Formation (Great Valley Group), Cenomanian (100.5 - 93.9 Ma)
• Age given as Early Turonian, but ammonites are Cenomanian.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, conglomeratic sandstone
Size class: macrofossils
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 185726: authorized by Matthew Clapham, entered by Matthew Clapham on 10.05.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
? Margarites sp. Gray 1847 snail | |
"Cylichnina sp." = Retusa (Cylichnina)
"Cylichnina sp." = Retusa (Cylichnina) Monterasato 1884 snail | |
Biplica cf. isoplicata Popenoe 1957 snail | |
Bivalvia | |
Acila (Truncacila) sp. Grant and Gale 1931 divaricate nutclam | |
Pterotrigonia sp. van Hoepen 1929 clam | |
? Lucinidae indet. Fleming 1828 clam | |
? Martesia sp. Sowerby 1824 clam | |
Corbulidae indet. Lamarck 1818 clam | |
? Legumen sp. Conrad 1858 venus clam
Calva (Egelicalva) spissa Saul and Popenoe 1992 venus clam | |
Cymbophora sp. Gabb 1869 clam | |
Meekia (Meekia) radiata Gabb 1864 clam | |
Modiolus sp. Lamarck 1801 mussel | |
Glycymeris (Glycymeris) cf. pacifica Anderson 1902 clam | |
Mytiloides opalensis Böse 1923 clam | |
Cephalopoda | |
? Tragodesmoceras sp. Spath 1922 ammonite | |
Puzosia sp. Bayle 1878 ammonite | |
Sciponoceras cf. kossmati Nowak 1908 ammonite | |
? Hyphantoceras sp. Hyatt 1900 ammonite | |
Scaphopoda | |
Dentalium sp. Linnaeus 1758 tusk shell |