Recent species of the prionodont pelecypod CucullaeaPublished in Journal of The Washington Academy of Sciences, in 1960, in volume 40, pages 338-343Paleontologic record of the primary differentiation in some major invertebrate groupsPublished in Journal of The Washington Academy of Sciences, in 1960, in volume 49, pages 351-366
Paleontologic record of the primary differentiation in some major invertebrate groupsPublished in Journal of The Washington Academy of Sciences, in 1960, in volume 49, pages 351-366