perekond
Discoceras Barrande, 1867
Taksoni kirjeldused
Kröger & Aubrechtová, 2019
Diagnosis (after Furnish & Glenister 1964). Gradually expanding conchs with a ribbed or smooth shell surface, characterized by a slight to moderate whorl overlap, circular to subquadrate whorl cross section, central position of siphuncle in initial half-volution, marginodorsal in succeeding 1.5–2 whorls, subdorsal at maturity, and thick, layered connecting rings.
Valik taksonit käsitlevast teaduskirjandusest
Aubrechtová, M., Korn, D., Kröger, B. 2026. The genus Discoceras (Tarphyceratida, Cephalopoda; Ordovician) from Estonia and glacial erratics in north-central Europe. Journal of Taphonomy 1-54. DOI:10.5852/ejt.2026.1036.3173
Kröger, B. 2025. The Lyckholm acme of cephalopods – Review of the late Katian (Vormsi–Pirgu regional stages) Ordovician cephalopods of Estonia. European Journal of Taxonomy 978, 1-169. DOI:10.5852/ejt.2025.978.2801
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
Stumbur, H. A. 1960. On different ways of evolution of nautiloids. Eesti NSV Teaduste Akadeemia Toimetised, Tehniliste ja Füüsikalis-matemaatiliste teaduste seeria / Известия Академии наук Эстонской ССР. Серия технических и физико-математических наук 9, 4, 368-378. DOI:10.3176/phys.math.tech.1960.4.09
Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö. Juhendaja: A. Rõõmusoks]. pp. 1-159.
Balashov, Z. G. 1953. Svernutye i polusvernutye nautiloidei ordovika Pribaltiki. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 217-300. Gostoptehizdat.
Leitud liigid
2. Discoceras vesenbergense (Balashov, 1953) | Rakvere lade
Klassifikatsioon
See also
Levik kirjandusandmetel
- Kröger, 2013 Kärdla paemurd Vormsi lade
- Kröger, 2013 Kärdla paemurd Vormsi lade
- Kröger, 2013 Kallholn karjäär, Rootsi Katy lade