Where: Contra Costa County, California (37.9° N, 121.7° W: paleocoordinates 40.5° N, 104.5° 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
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 52433: authorized by Austin Hendy, entered by Austin Hendy on 05.08.2005, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Polinices (Euspira) nuciformis Gabb 1864 moon snail | |
Drillia hartleyensis Clark and Woodford 1927 snail | |
Bivalvia | |
Nucula (Acila) gabbiana Dickerson 1916 nut clam | |
| |
Ostrea sp. Linnaeus 1758 oyster | |
"Cardium (Pingecardium) hartleyensis" = Acanthocardia (Schedocardia) brewerii hartleyensis
"Cardium (Pingecardium) hartleyensis" = Acanthocardia (Schedocardia) brewerii hartleyensis Clark and Woodford 1927 cockle | |
"Tellina longa" = Tellina (Angulus) longa
"Tellina longa" = Tellina (Angulus) longa Gabb 1864 tellin clam | |
"Diplodonta cretacea" = Diplodonta (Diplodonta) cretacea
"Diplodonta cretacea" = Diplodonta (Diplodonta) cretacea Gabb 1864 clam | |
"Spisula meganosensis n. sp." = Pseudocardium meganosensis
"Spisula meganosensis n. sp." = Pseudocardium meganosensis Clark and Woodford 1927 clam | |
Coralliophaga sp. Blainville 1824 clam | |
Anthozoa | |
"Archohelia clarki n. sp." = Petrophyllia clarki2
|