Saxbyoceras, Kröger, 2025
publication ID |
https://doi.org/10.5852/ejt.2025.978.2801 |
publication LSID |
lsid:zoobank.org:pub:422E6F06-B4C8-4840-854C-811145D88B32 |
persistent identifier |
https://treatment.plazi.org/id/93268783-964E-701E-FD9C-FC42FB3BF92E |
treatment provided by |
Plazi (2025-03-07 10:46:31, last updated 2025-03-07 11:32:00) |
scientific name |
Saxbyoceras |
status |
gen. nov. |
Genus Saxbyoceras gen. nov.
urn:lsid:zoobank.org:act:F9537354-5080-41CB-9ADF-D443823ECEAD
Type species
Saxbyoceras kingpooli gen. et sp. nov., from Saxby shore, Kõrgessaare Formation, Vormsi Island, Estonia; Vormsi Regional Stage.
Diagnosis
Slightly endogastrically curved brevicone with smooth (or nearly so) conch surface; conch cross section circular or slightly compressed; mature body chamber slightly curved, not (or only very slightly) constricted; sutures are nearly straight and directly transverse; siphuncle eccentrically positioned toward the concave side of the conch with widely expanded segments; septal necks very short or achoanitic; endosiphuncular or cameral deposits not known.
Etymology
From Saxby, Vormsi Island, Estonia, the type locality of the type species of this genus.
Remarks
The new genus is best compared with Siljanoceras Kröger, 2013 , from which it differs in having a much smaller angle of expansion (33° in Siljanoceras ) and an endogastrically curved conch.
Kroger B. 2013. The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden. European Journal of Taxonomy 41: 1-110. https://doi.org/10.5852/ejt.2013.41
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