@article {7525, title = {New morphologic information on the bivalve Isognomon (Isognomon) ponzana (Loel \& Corey, 1932) from tthe Lower Miocene Vaqueros Formation, Southern California}, journal = {The Veliger}, volume = {37}, number = {2}, year = {1994}, note = {reprint}, pages = {215-217}, keywords = {bivalvia, cenozoic, fossil record, isognomon, miocene, mollusca, pterioidea, taxonomy}, author = {Squires, Richard L.} }