Also known as RB36
Where: Clallam County, Washington (48.2° N, 123.9° W: paleocoordinates 47.8° N, 115.0° W)
• coordinate based on political unit
When: Pysht Formation, Chattian (28.1 - 23.0 Ma)
Environment/lithology: marine; shale
Size classes: macrofossils, mesofossils
• One specimen of left cheliped, showing portions of ischium, merus, carpus and proximal half of manus and an impression of the same (paratype e), [C. twinensis];
Preservation: mold/impression
Collected by Ralph Arnold, USGS in 1904; reposited in the USNM
• Station 80, register No. 4091; Paratype e, Cat. No. 353334 [C. twinensis];
Primary reference: M. J. Rathbun. 1926. The fossil stalk-eyed Crustacea of the Pacific slope of North America. United States National Museum Bulletin 138:1-155 [C. Schweitzer/S. Yost/M. Uhen]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 140249: authorized by Carrie Schweitzer, entered by Samantha Yost on 06.03.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Malacostraca | |
"Callianassa twinensis" = Callianopsis clallamensis
"Callianassa twinensis" = Callianopsis clallamensis Withers 1924 decapod |