†Pseudocardium gabbii robustum Weaver 1912 (clam)
Bivalvia - Cardiida - Mactridae
Alternative combination: Pseudocardium gabbi robustum
Full reference: C. E. Weaver. 1912. A preliminary report on the Tertiary paleontology of western Washington. Washington Geological Survey Bulletin 15:1-80
Belongs to Pseudocardium gabbi according to C. E. Weaver 1912
Sister taxa: Pseudocardium densatum minor, Pseudocardium gabbii elongatus, Pseudocardium gabbii undiliferum, Pseudocardium gabbii altus
Type specimen: Its type locality is Satsop, northeast 2, which is in a Miocene marine horizon in the Montesano Formation of Washington
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Satsop, northeast 2