Johnson, J. G.; Ludvigsen, R. (1972). Carinagypa, a new genus of pentameracean brachiopod from the Devonian of western North America. Journal of Paleontology. 46(1): 125-129.
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Johnson, J. G.; Ludvigsen, R.
1972
<i>Carinagypa</i>, a new genus of pentameracean brachiopod from the Devonian of western North America