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.
Synonyymit
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
Aiheeseen liittyvät julkaisut
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
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Luokittelu
Organism group | Biota |
Kingdom | Animalia |
Phylum | Mollusca |
Class | Cephalopoda |
Subclass | Orthoceratia |
Order | Orthocerida |
Suborder | Orthoceratina |
Family | Orthoceratidae |
Subfamily | Orthoceratinae |
Genus | Striatocycloceras |
Species | foerstei |
isbergi | |
obliquum | |
romingeri | |
undulostriatum |
See also
Levinneisyys ja viitteet
- Kröger & Isakar, 2006 Aluvere quarry Haljala Stage
- Kröger & Isakar, 2006 Oandu River outcrops Keila Stage
- Kröger & Isakar, 2006 Rägavere quarry Rakvere Stage