Species

Striatocycloceras romingeri (Foerste, 1932)

Taxon description

Kröger & Isakar, 2006

Diagnosis. Slightly curved, slightly compressed Striatocycloceras with very low apical angle of approximately 1°. Adult dorsoventral diameter approximately 10 mm, with four to five annulations at a distance that equate to the corresponding shell diameter in adult. Annulations straight, irregularly spaced, with conspicuous lobe at the side in opposition of the siphuncle. Coarse growth lines, about five to seven percycle of annulations. One suture line at every groove of the annulation, with parallel sutures and annulations. Siphuncle central.

Synonymy list

1932 Cycloceras romingeri — Foerste , pp. 89, fig. 126a,b

2006 Striatocycloceras romingeri (Foerste, 1932) — Kröger & Isakar , pp. 152, fig. 7p, 8r-t

2013 Striatocycloceras romingeri (Foerste, 1932) — Kröger , pp. 25

Selection of related publications

Kröger, B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52, 3, 591–608.

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

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Cephalopoda
Subclass	Orthoceratia
Order	Orthocerida
Suborder	Orthoceratina
Family	Orthoceratidae
Subfamily	Orthoceratinae
Genus	Striatocycloceras
Species	foerstei
	hosholmense
	isbergi
	obliquum
	romingeri
	undulostriatum