00718nam a2200205   4500001001300000003000400013005001700017008004100034010001700075040003500092050003000127100003600157245009400193260006400287300003200351440004700383650003700430650002800467999001700495gs 68000134 DLC20260227111421.0690715s1968    nyua     b    00000 eng c  ags 68000134   aU.S. Geological Survey Library1 aQE701b.I 82 v. 6, no. 3910aHeaslip, William Graham,d1928-1 aCenozoic evolution of the alticostate venericards in gulf and east coastal North America.0 aIthaca, N.Y.,bPaleontological Research Institution,c1968.  a[55]-135 p.billus.c31 cm.  aPalaeontographica Americana,vv. 6, no. 39 0aMollusks, FossilzNorth America. 0aPaleontologyyCenozoic.  c30409d30409