UCMP 3162, upper Deer Valley (Eocene of the United States)

Where: Contra Costa County, California (37.9° N, 121.8° W: paleocoordinates 40.6° N, 104.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Meganos Formation, Ypresian (56.0 - 47.8 Ma)

• "Meganos" faunas represent upper Bulitian and lower Penutian local ages=Ypresian

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, fine-grained, pebbly, calcareous sandstone

• Shallow marine coastal siliciclastic environment
• Fine, micaceous sandstone, commonly with small pebbles, thinly beeded near bottom, more massive at top, yellow-brown to gray in color. The massive sandstones near top contain lenses of harded calcareous and fossiliferous sandstones.

Size class: macrofossils

Reposited in the UCMP

Collection methods: quarrying,

• Collected by Clark and Woodford. Collections reposited at UCMP.

Primary reference: B. L. Clark and A. O. Woodford. 1927. The geology and paleontology of the type section of the Meganos Formation (lower Middle Eocene) of California. University of California Publications in Geological Sciences 17(2):63-142 [A. Miller/A. Hendy/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 52427: authorized by Austin Hendy, entered by Austin Hendy on 05.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Identified by Clark and Stewart.
Show authors, comments, and common names
Gastropoda
 Neogastropoda - Turridae
Gemmula diabloensis n. sp.
Gemmula diabloensis n. sp. Clark and Woodford 1927 turrid
Bivalvia
 Solemyida - Solemyidae
Solemya sp.
Solemya sp. Children 1823 Awning Clam
 Cardiida - Ungulinidae
"Diplodonta cretacea" = Diplodonta (Diplodonta) cretacea
"Diplodonta cretacea" = Diplodonta (Diplodonta) cretacea Gabb 1864 clam
 Cardiida - Veneridae
Pitar uvasana n. sp.
Pitar uvasana n. sp. Conrad 1855 venus clam
Subspecies: Pitaria uvasana marhsallensis
 Cardiida - Mactridae
"Spisula tejonensis" = Mactromeris tejonensis, "Spisula meganosensis n. sp." = Pseudocardium meganosensis
"Spisula tejonensis" = Mactromeris tejonensis Packard 1916 clam
"Spisula meganosensis n. sp." = Pseudocardium meganosensis Clark and Woodford 1927 clam
 Cardiida - Tellinidae
"Tellina longa" = Tellina (Angulus) longa, Tellina remondii
"Tellina longa" = Tellina (Angulus) longa Gabb 1864 tellin clam
Tellina remondii Gabb 1864 tellin clam