Meek, F. B.; Hayden, F. V. (1857). Descriptions of new genera of fossils, collected by Dr. F.V. Hayden, in Nebraska territory, under the direction of Lieut. G.K. Warren, US Topographical Engineer; with some remarks on the Tertiary and Cretaceous formations of the north-west, and parallelism of the latter with those of other portions of the United States and Territories. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 9: 117–148., available online athttps://www.biodiversitylibrary.org/page/6330383 page(s): 146 [details]
Note "Bed G. of the freshwater and estuary...
From editor or global species database
Type locality "Bed G. of the freshwater and estuary formation at the Mouth of Judith River", Montana, USA; Judith River Fm., Campanian, Late Cretaceous [details]
original descriptionMeek, F. B.; Hayden, F. V. (1857). Descriptions of new genera of fossils, collected by Dr. F.V. Hayden, in Nebraska territory, under the direction of Lieut. G.K. Warren, US Topographical Engineer; with some remarks on the Tertiary and Cretaceous formations of the north-west, and parallelism of the latter with those of other portions of the United States and Territories. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 9: 117–148., available online athttps://www.biodiversitylibrary.org/page/6330383 page(s): 146 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Grammatical gender Wrong gender of specific epithet. [details] Type locality "Bed G. of the freshwater and estuary formation at the Mouth of Judith River", Montana, USA; Judith River Fm., Campanian, Late Cretaceous [details]
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