CAS 31209 - Cache Creek, Rumsey, Solano (Cretaceous of the United States)

Also known as CAS 31209

Where: Yolo County, California (38.5° N, 122.0° W: paleocoordinates 43.8° N, 87.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Funks Formation (Asuncion Group), Santonian (86.3 - 83.6 Ma)

• A local facies of the Funks Formation, in the higher part of the formation, consisting of thick beds of sandstone interdispersed with thinner beds of shale. Some are sparingly fossiliferous, and some are rich, though they are not well preserved. PJW: Was Coniacian, but upper part of Funks is Santonian.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified sandstone and argillaceous shale

• No paleoenvironmental data reported.
• Thick beds of sandstone interdispersed with thinner beds of shale.

Size class: macrofossils

Reposited in the CAS

Collection methods: quarrying,

• Collected and identified by Anderson.

Primary reference: F. M. Anderson. 1958. Upper Cretaceous of the Pacific Coast. Geological Society of America Memoir 71:1-378 [A. Miller/A. Hendy/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 44238: authorized by Austin Hendy, entered by Austin Hendy on 06.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Probably not exhaustive, but representative.
Bivalvia
 Myalinida - Inoceramidae
Gastropoda
 Stromboidea - Aporrhaidae
Tessarolax aff. distorta Gabb 1864 snail
 Sorbeoconcha - Potamididae
Cerithidea sp. Swainson 1840 horn snail
 Sorbeoconcha - Cerithiidae
Cerithium sp. Bruguière 1789 cerith snail
Cephalopoda
 Ammonitida - Pachydiscidae
Eupachydiscus sp. Spath 1922 ammonite
 Ammonitida - Desmoceratidae
"Desmophyllites aff. yoloensis" = Desmophyllites diphylloides, Hauericeras sp.
"Desmophyllites aff. yoloensis" = Desmophyllites diphylloides Forbes 1846 ammonite
Hauericeras sp. de Grossouvre 1894 ammonite
 Ammonitida - Gaudryceratidae
"Lytoceras (Gaudryceras) sp." = Gaudryceras, Lytoceras (Gaudryceras) alamedense
"Lytoceras (Gaudryceras) sp." = Gaudryceras de Grossouvre 1894 ammonite
 Ammonitida - Collignoniceratidae
 Ammonitida - Scaphitidae
"Scaphites (? Discoscaphites) sp." = Discoscaphites Meek 1870 ammonite
Scaphites (Yesoites) sp. Parkinson 1811 ammonite
Scaphites aff. hippocrepis DeKay 1828 ammonite
 Ammonitida - Diplomoceratidae
Diplomoceras sp. Hyatt 1900 ammonite