sugukond

Dawsonoceratidae Flower, 1962

Taksoni kirjeldused

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

Valik taksonit käsitlevast teaduskirjandusest

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.

Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö]. pp. 1-159.

Teichert, C. 1930. Die Cephalopoden-Fauna der Lyckholm-Stufe des Ostbaltikums. Paläontologische Zeitschrift 12, 3/4, 264-312. DOI:10.1007/BF03044452

Leitud liigid

1. Dawsonoceras annulatum (Sowerby, 1816) | Wenlock

2. Dawsonoceras barrandei Horny, 1956 | Wenlock

3. Dawsonoceras fenestratum (Eichwald, 1860) | Porkuni lade

4. Dawsonoceras funiforme (Angelin, 1880)

5. Dawsonoceras gregarium Kröger, Ebbestad, Högström et Frisk, 2011 | Hirnanti lade

6. Dawsonoceras obsoletum (Barrande, 1874) | Paadla lade→Ohesaare lade

7. Dawsonoceras stumburi Kröger, 2013 | Vormsi lade

8. Palaeodawsonocerina nicolletoides Kröger, 2013 | Katy lade

9. Palaeodawsonocerina senckenbergi (Teichert, 1930) | Keila lade→Pirgu lade

Klassifikatsioon

organismirühm	Biota
riik	Animalia
hõimkond	Mollusca
klass	Cephalopoda
alamklass	Orthoceratia
selts	Orthocerida
alamselts	Orthoceratina
sugukond	Arionoceratida
	Arionoceratidae
	Dawsonoceratidae
perekond	Dawsonoceras
	Palaeodawsonocerina
sugukond	Eriditidae
	Geisonoceratidae
	Lamellorthoceratidae
	Orthoceratidae
	Proteoceratidae
	Tripteroceratidae