Swett's Ranch, Martinez (Eocene of the United States)
Where: Contra Costa County, California (38.0° N, 122.1° W: paleocoordinates 41.9° N, 103.7° W)
When: Early/Lower Eocene (55.8 - 48.6 Ma)
Environment/lithology: marine; lithology not reported
Size class: macrofossils
Primary reference: U. S. Grant and L. G. Hertlein. 1938. The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences 2:1-225 [L. Villier/L. Villier]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 203407: authorized by Mark Uhen, entered by Mark Uhen on 14.08.2019
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Echinoidea | |
Cidaris martinezensis Kew 1920 pencil urchin |