LSJU loc. 3355, 1000 feet north of Papa Place, Mill Creek (Cretaceous to of the United States)

Where: Tehama County, California (40.2° N, 121.8° W: paleocoordinates 47.4° N, 89.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• Str. position: A small exposure of Cretaceous mudstone, surrounded by Cenozoic volcanic rocks

•Fossils: Canadoeeras yokoyamai (JIMBO)*, Canadoeeras n. sp. ( ?) aff. C. hoepeni COLLIGNON, Hauerieeras cf. angustum YABE, Glyptoxoeeras sp., Tetragonites sp., Inoeeramus naumanni YOKOYAMA, other mollusks

•Age: Uppermost Santonian or Lower Campanian

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified mudstone

Size class: macrofossils

Collected by S. W. Miller; reposited in the CAS

Primary reference: T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 225736: authorized by Jonathan Marcot, entered by Jonathan Marcot on 27.05.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Myalinida - Inoceramidae
"Inoceramus naumanni" = Sphenoceramus naumanni
"Inoceramus naumanni" = Sphenoceramus naumanni Yokoyama 1890 clam
Cephalopoda
 Ammonitida - Desmoceratidae
"Hauericeras cf. angustum" = Hauericeras (Gardeniceras) angustum
"Hauericeras cf. angustum" = Hauericeras (Gardeniceras) angustum Yabe 1904 ammonite
 Ammonitida - Pachydiscidae
Canadoceras yokoyamai Jimbo 1894 ammonite
Canadoceras aff. hoepeni Collignon 1955 ammonite
as "Canadoceras n. sp. (?) aff. C. hoepeni"
 Ammonitida - Tetragonitidae
Tetragonites sp. Kossmat 1895 ammonite
 Ammonitida - Diplomoceratidae
Glyptoxoceras sp. Spath 1925 ammonite