Orthoceratacea M'Coy, 1844
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https://doi.org/ 10.5281/zenodo.13272378 |
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https://treatment.plazi.org/id/03F28786-B171-FF92-FFE4-FD486E81DDA2 |
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Felipe |
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Orthoceratacea M'Coy, 1844 |
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Superfamily Orthoceratacea M'Coy, 1844 [nom.
transl. Sweet 1964 ex Orthoceratidae M’Coy, 1844 ]
Diagnosis.—The shell of the Orthoceratacea is straight or slightly curved and smooth or ornamented and has a circular cross section. The siphuncle is central or subcentral with ortho− suborthochoanitic and seldom secondarily cyrtochoanitic, septal necks. Endosiphuncular and cameral deposits may occur.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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