Cephalopoda

Striatocycloceras foerstei (Teichert, 1930)

Taxon description

Kröger & Isakar, 2006

Diagnosis. StraightStriatocycloceraswith circular cross-sec-tion and medium apical angle of approximately 8. Seven ir-regularly spaced annulations at a distance that equates thecorresponding shell diameter. Acute annulations slightly obli-que toward growth direction with slight lateral sinus, with ap-proximately 10 growth lines per annulation. One suture lineat every groove of the annulation, sutures and annulationsrun parallel. Siphuncle central. Short orthochoanitic septalnecks

Type specimen data
SMF XI 358a ,
Synonymy list
1858     Orthoceras arcuolyratum — Schmidt, pp. 196
1916     Orthoceras arcuolyratum — Twenhofel, pp. 298
1930     Leurocycloceras foerstei n. sp — Teichert, pp. 278, fig. 6:13-16
1962     Leurocycloceras foerstei — Balashov, pp. 110, fig. 48:3
2006     Striatocycloceras foerstei (Teichert, 1930) — Kröger & Isakar, fig. 7q, 10h
2013     Striatocycloceras foerstei (Teichert, 1930) — Kröger, pp. 25
Selection of related publications
Kröger, B., Ebbestad, J.O.R., Högström, A.E.S., Frisk, A.M. 2011. Mass concentration of Hirnantian cephalopods from the Siljan District, Sweden; taxonomy, palaeoecology and palaeobiogeographic relationships. Fossil Record 14, 1, 35-53. DOI:10.1002/mmng.201000014
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
Teichert, C. 1930. Die Cephalopoden-Fauna der Lyckholm-Stufe des Ostbaltikums. Paläontologische Zeitschrift 12, 3/4, 264-312. DOI:10.1007/BF03044452