TY - BOOK T1 - The Guadalupian fauna T2 - U. S. Geological Survey. Professional paper 58 Y1 - 1908 A1 - Girty, George H. SP - 651 KW - mollusca, bivalvia, pterioida, pterioidea, bakevellidae, bakevellia, pteriidae, pteria, Isognomonidae, myalinidae, myalina, paleontology, taxonomy JF - U. S. Geological Survey. Professional paper 58 PB - Government Printing Office CY - Washington ER -