Isorthoceras Flower, 1962
publication ID |
https://doi.org/ 10.5852/ejt.2013.41 |
publication LSID |
lsid:zoobank.org:pub:A2F1B9ED-870A-466E-B35E-BD5DA782476E |
DOI |
https://doi.org/10.5281/zenodo.3815180 |
persistent identifier |
https://treatment.plazi.org/id/AD4D9054-CD51-6A53-F033-43E1FEE3F925 |
treatment provided by |
Carolina |
scientific name |
Isorthoceras Flower, 1962 |
status |
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Genus Isorthoceras Flower, 1962
Type species
Orthoceras sociale Hall in Miller, 1877 , from the Elgin Member, Maquoketa Formation, latest Katian, Graf, Iowa, USA; by original designation.
Diagnosis
Orthoconic longicones with subcircular cross section and subdued ornamentation, smooth or with fine transverse and/or longitudinal lirae. Siphuncle subcentral, with barrel-shaped early segments and subcylindrical later segments. Septal necks suborthochoanitic-cyrtochoanitic. Endosiphuncular annuli grow forward and backward,joining those of adjacent segments to form continuous parietal lining of uniform thickness throughout segments. Mural to episeptal cameral deposits. (Adopted from Flower 1962 and Frey 1995.)
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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SubOrder |
Orthoceratina |
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