Family
Dawsonoceratidae Flower, 1962
Taxon description
Kröger & Isakar, 2006
Emended diagnosis. Annulated orthocones with slender,central to subcentral, tubular or moderately expanded si-phuncle. Septal necks very short and can vary betweenachoanitic, suborthochoanitic, or very short cyrtochoanitic insome developed species. Shell ornamented with a reticulatepattern of growth lines and fine longitudinal raised lines, orwith transverse festoons. Apical shell large, without cicatrix,without initial constriction, apex blunt, annulated or smooth,transverse or longitudinal ornamentation may occur. Incipi-ent annulosiphuncular deposits, and mural cameral depositsare known
Selection of related publications
Kröger, B. 2013. The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden. European Journal of Taxonomy 41, 41, 1-110. DOI:10.5852/ejt.2013.41
Kröger, B., Ebbestad, J. O. R., Högström, A. E. S., Frisk, Ǻ. 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. 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
Kiselev, G. N. 1991. Revizia pozdneordovikskikh i siluriskikh tsefalopod Pribaltiki iz kollektsii E. I. Eichwalda. Bulletin of the Moscow Society of Naturalists. Geological series 66, 4, 85-101.
Teichert, C. 1930. Die Cephalopoden-Fauna der Lyckholm-Stufe des Ostbaltikums. Paläontologische Zeitschrift 12, 3/4, 264-312. DOI:10.1007/BF03044452
List of species
1. Dawsonoceras annulatum (Sowerby, 1816) | Wenlock
2. Dawsonoceras barrandei Horny, 1956 | Wenlock
3. Dawsonoceras fenestratum (Eichwald, 1860) | Porkuni Stage
5. Dawsonoceras gregarium Kröger, Ebbestad, Högström et Frisk, 2011 | Hirnantian
7. Dawsonoceras stumburi Kröger, 2013 | Vormsi Stage
8. Palaeodawsonocerina nicolletoides Kröger, 2013 | Katian
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Orthocerida |
| Suborder | Orthoceratina |
| Family | Arionoceratida |
| Arionoceratidae | |
| Dawsonoceratidae | |
| Genus | Dawsonoceras |
| Palaeodawsonocerina | |
| Family | Eriditidae |
| Geisonoceratidae | |
| Lamellorthoceratidae | |
| Orthoceratidae | |
| Proteoceratidae | |
| Tripteroceratidae |
See also