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Showing results for tags 'cancellariidae'.
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Olsson & Petit (1964) described Trigonostoma carolinense as very similar to the modern Trigonostoma tererum however differing in being a much heavier shell and larger than the extant species. The ornamentation is quite different from T. elizbethae (LINK) as T. carolinese has 4-5 cords none which are as heavy as the two cords in T. elizbethae. I have seen this shell described in various publications as T. tenerum and T. tenerum carolinense. I have chosen the designation in O&P due to my respect of their work. Of note is that I have classified T. carolinense in only Upper Pliocene deposits; Tamiami, Duplin and Yorktown. I have designated similar shells in the Pleistocene (Bermont and Caloosahatchee) as T. tenerum. Reference Olsson, A.A., and R.E. Petit. 1964. Some Neogene Mollusca from Florida and the Carolinas, Bulletins of American Paleontology 47(217): pages 509-574, plates 77-83
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- cancellariidae
- duplin formation
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Trigonostoma elizabethae was named by Olsson & Petit (1964). Axel Olsson was an oil geologist who published in paleontology while Richard "Dick" Petit who recently passed away was a natural history bookseller who became the foremost authority on the family Cancellariidae. In describing T. elizabethae they noted that the shell has a nodose shoulder with two very nodose primary cords on the body whorl in addition to less nodose secondary cords. Reference Olsson, A.A., and R.E. Petit. 1964. Some Neogene Mollusca from Florida and the Carolinas, Bulletins of American Paleontology 47(217): pages 509-574, plates 77-83
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- cancellariidae
- gelasian
- (and 4 more)