Published by Paleontology Section of the Houston Gem and Mineral Society, Houston, Texas, 1982
Soft cover. Condition: Near Fine. Rosemary Akers (illustrator). Green paper covers, perfect binding. Small sticker shadows on front and rear covers, else clean and unmarked. 155 pages. Contents include: Introduction, Cretaceous Period in Texas, Fossil Preservation, Classification, Steps to Identification, Illustrated Glossary, Frequently Found Bivalves (Descriptions and Illustrations), Localities, Appendix I - Annotated List of Species, Appendix II - References, Index of Genera, and Index of Species.