Also known as Big Rock Creek
Where: Los Angeles County, California (34.4° N, 117.9° W: paleocoordinates 36.9° N, 100.8° W)
When: San Francisquito Formation, Early/Lower Eocene (55.8 - 48.6 Ma)
Environment/lithology: marine; lithified, quartzose, gray sandstone and shale
Size class: macrofossils
Collected by R. E. Dickerson, Emerson Butterworth, Edward Brainerd; reposited in the UCMP
Primary reference: R. E. Dickerson. 1914. The Martinez Eocene and associated formations at Rock Creek on the western border of the Mohave Desert area. University of California Publications Bulletin of the Department of Geology 8(141):289-298 [J. Marcot/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 203578: authorized by Mark Uhen, entered by Mark Uhen on 20.08.2019, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Phacoides muirensis" = Claibornites (Codalucina) muirensis
"Phacoides muirensis" = Claibornites (Codalucina) muirensis Dickerson 1914 clam | |
Saxidomus noblei n. sp.
Saxidomus noblei n. sp. Dickerson 1914 venus clam | |
Echinoidea | |
Cidaris sp. Leske 1778 pencil urchin | |
Catopygus cajonensis Kew 1920 sea urchin |