Pecten caurinus Gould, exterior of right valve, a little less than half natural size #1; Pecten hindsii navarchus Dall, exterior of right and left valves, respectively #2/3; Axinopsis sericatus Carpenter, Typical Specimen #4.
Pecten Jordani Arnold, Exterior of Right Valve #1;; Pecten Jordani Arnold, Exterior of Left Valve #2; Lyonsia pugetensis Dall, Exterior of Left Valve #3.