Popiel-Barczyk, E.; Smirnova, T. N. (1978). New genus megathyrid (Brachiopoda) from the Upper Cretaceous of Poland. Paleontologicheskii Zhurnal. 3: 134-137.
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Popiel-Barczyk, E.; Smirnova, T. N.
1978
New genus megathyrid (Brachiopoda) from the Upper Cretaceous of Poland