Cyclostomiceras Hyatt, 1900
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publication ID |
https://doi.org/ 10.5852/ejt.2021.783.1601 |
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publication LSID |
lsid:zoobank.org:pub:071EAD63-05ED-4D6C-AC45-8719E6D79E0B |
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DOI |
https://doi.org/10.5281/zenodo.5793450 |
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persistent identifier |
https://treatment.plazi.org/id/5F4487AC-FFA2-FFA0-FD93-7E5FFB2678B5 |
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treatment provided by |
Felipe |
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scientific name |
Cyclostomiceras Hyatt, 1900 |
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Genus Cyclostomiceras Hyatt, 1900
Type species
Gomphoceras cassinense Whitfield, 1886 from the Fort Cassin Formation (Floian) at Fort Cassin headland, Vermont, USA; by original designation.
Diagnosis
Gomphoceroid, breviconic orthocones with circular to depressed conch cross section; phragmocone expanding adorally rapidly; anterior half of mature body chamber slightly contracted. Sutures and growth lines straight and directly transverse; siphuncle small, rSD = 0.15, ventral in position but not marginal; septal necks orthochoanitic, connecting rings thick and layered (from King 1998).
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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