The rostroconch was at one time classified as a Pelecypoda but now have their own class as Rostroconchia. The section in the book only covered 4 pages so I am guessing these creatures are somewhat rare and not studied a great deal. The geologist that wrote the section was named Richard D. Hoare who was a professor at Bowling Green State University in Ohio from 1957-1990.
My cousin found this fossil and it appears he may have cleaned it with an air abrasive cleaner.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4wi7GMuei1bmXz0rqu5_-34hHbbVCe7DOLDf4Jr28zH1RmaCXagjsX6T4Z4FJfpXftV7hs6XpfX0FX60IRcsZEDBGRqCq4Xr59cMO0PqI-gmGqppAD3UM8YQGmer8obuYnwcx5RloIHWl/s400/hippocardia-cuneus4.jpg)
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