PROPEAMUSSIIDAE ABBOTT, 1954

Charles L. Powell, Ii, Clites, Erica C. & Poust, Ashley W., 2019, Miocene marine macropaleontology of the fourth bore Caldecott Tunnel excavation, Berkeley Hills, Oakland, California, USA, PaleoBios 36, pp. 1-34 : 9

PROPEAMUSSIIDAE ABBOTT, 1954

FIG. 13

Two partial, mostly decorticated, possibly right, valves of an indeterminate Propeamussiidae are represented in the Tsm Caldecott Tunnel fauna. On first glance they appear to have interior radial ribs as in the genus Propeamussium ; however, they do not originate at the umbo and therefore are interpreted as cracks formed in the shell during or after deposition. The family is distributed worldwide and according to Waller (1971) occurs in water depths from 275 to 2,740 m. It ranges in age from the Jurassic to Holocene (Moore 1984).

Figures

Figure 13. Indeterminate Propeamussiidae from the Tsm Caldecott Tunnel fauna, possibly right valve. Hypotype from UCMP locality IP13004, UCMP 412704.