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Meek, F. B.; Worthen, A. H. (1869). Descriptions of new Carboniferous fossils from the western states. Proceedings of the Academy of Natural Sciences of Philadelphia. 21: 137-172.
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Meek, F. B.; Worthen, A. H.
1869
Descriptions of new Carboniferous fossils from the western states
Proceedings of the Academy of Natural Sciences of Philadelphia
21: 137-172
Publication
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Prothyris Meek, 1869 † (original description)