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Strandoceras orvikui

Cephalopoda - Discosorida - Cyrtogomphoceratidae

Taxonomy
Strandoceras orvikui was named by Kröger (2007). Its type locality is Porkuni, Siuge Member, which is in a Porkuni perireef or subreef lime mudstone/chert in the Ärina Formation of Estonia.

Synonymy list
YearName and author
2007Strandoceras orvikui Kröger p. 604 figs. 7A, B, 10

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classCephalopodaCuvier 1797
orderDiscosoridaFlower 1950
familyCyrtogomphoceratidaeFlower 1940
genusStrandocerasFlower 1946
speciesorvikui

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
B. Kröger 2007Smooth Strandoceras with very high dorso− ventral angle of expansion of 20–30 . Conch is strongly compressed; lateral diameter is approximately 0.7 of dorso− ventral diameter. Similar as in other species of Strandoceras narrow longitudinal ridge occurs at concave side of conch growth axis. Septal spacing is very narrow, 0.12 of dorso− ventral diameter. Siphuncular tube is approximately 0.2 of dorsoventral diameter. Apex is smooth, blunt, not constricted from juvenile conch. Second septum occurs at cross section diameter of approximately 0.24 mm.