Cephalopoda

Striatocycloceras obliquum (Eichwald, 1860)

Taxon description

Kröger & Isakar, 2006

Diagnosis. Straight, slightly compressedStriatocycloceraswith high apical angle of approximately 10. Six, irregularlyspaced smooth annulations at a distance that equates the cor-responding shell diameter in adult, with three annulations injuvenile specimens, respectively. Annulations slightly obliquetoward growth direction with slight lateral sinus, with ap-proximately 10 growth lines per annulation. One suture lineat every groove of the annulation, annulations slightly obli-que toward sutures.

Type specimen data
PSM ,
Synonymy list
1860     Orthoceras obliquum — Eichwald, pp. 1209, fig. 49:7
1879     Orthoceras obliquum — Dewitz, pp. 34
1880     Orthoceras obliquum — Dewitz, pp. 170
1930     Orthoceras obliquum — Teichert, pp. 270, 278
2006     Striatocycloceras obliquum (Eichwald, 1860) — Kröger & Isakar, pp. 151, fig. 7K,O; 8D, 11
2013     Striatocycloceras obliquum (Teichert, 1930) — Kröger, pp. 25
Selection of related publications
Kröger, B. & Isakar, M. 2006. Revision of annulated orthoceridan cephalopods of the Baltoscandic Ordovician. Fossil Record 9, 1, 137-163. DOI:10.1002/mmng.200600005
References based on distribution