Asuncion Group - Enos Canyon, Shasta (Cretaceous of the United States)

Where: Yolo County, California (38.6° N, 122.0° W: paleocoordinates 42.7° N, 86.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Funks Formation (Asuncion Group), Coniacian (89.8 - 86.3 Ma)

• Collected from limestone lentils. Funk Shale comprises lentils of limestone at frequent intervals with its lower part. The shale has a thickness of 1640 ft or more, and is underlain by a thick succession of sandstone and shale, probably referable to the Turonian.

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

• No paleoenvironmental data reported.
• From limestone lentil.

Size class: macrofossils

Reposited in the CAS

• Reposited in CAS collections.

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 44214: authorized by Austin Hendy, entered by Austin Hendy on 04.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative faunal list.
Gastropoda
 Basommatophora - Siphonariidae
Anisomyon meeki Gabb 1864 pulmonate
Bivalvia
 Nuculida - Nuculidae
"Acila demessa" = Acila (Truncacila) demessa
"Acila demessa" = Acila (Truncacila) demessa Finlay 1927 divaricate nutclam
 Lucinida - Thyasiridae
Thyasira cretacea Whiteaves 1873 clam
misspelled as "Thyrasira cretacea"
 Myalinida - Inoceramidae
 Ostreida - Gryphaeidae
"Exogyra parasitica" = Amphidonte (Amphidonte) parasitica
"Exogyra parasitica" = Amphidonte (Amphidonte) parasitica Gabb 1864 oyster
 Pectinida - Pectinoidae
"Pecten (Camptonectes) cf. curvatus" = Camptonectes virgatus
"Pecten (Camptonectes) cf. curvatus" = Camptonectes virgatus Nilsson 1827 scallop
 Pectinida - Propeamussiidae
"Pecten (Propeamuseum) cowperi" = Propeamussium (Parvamussium) cowperi
"Pecten (Propeamuseum) cowperi" = Propeamussium (Parvamussium) cowperi Waring 1917 mud scallop
Scaphopoda
  -
Dentalium (Entalis) whiteavesi Anderson and Hanna 1935 tusk shell