Genus

Ormoceras Stokes, 1840

Selection of related publications

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, 1-168. DOI:10.5852/ejt.2025.978.2801

Saladžius, V. J. 1971. Cephalopods of the Ludlowian and Downtonian deposits of the Upper Silurian of the Southern Baltic area. Palaeontology and stratigraphy of the Baltic and Byelorussia. Number III, pp. 205-208. Mintis.

Sweet, W. C. 1958. The Middle Ordovician of the Oslo Region, Norway: 10. Nautiloid Cephalopods. Norsk Geologisk Tidsskrift 38, 1, 1-178.

Balashov, Z. G. 1955. Nekotorye novye rody i vidy nautiloidej ordovika Pribaltiki. Voprosy paleontologii II, 45-54.

Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö. Juhendaja: A. Rõõmusoks]. 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

List of species

1. Ormoceras brevis Saladzhius, 1971

2. Ormoceras estonicum Balashov, 1955 | Lasnamägi Stage

3. Ormoceras heckeri Teichert, 1930 | Pirgu Stage

4. Ormoceras kiaeri Sweet, 1958 | Katian

5. Ormoceras lapense Saladzhius, 1966 | Ludlow

6. Ormoceras schmidti Balashov, 1955 | Kunda Stage

7. Ormoceras volchovense Balashov, 1955 | Aseri Stage→Uhaku Stage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Cephalopoda
Subclass	Actinoceratoidea
Order	Actinocerida
Family	Ormoceratidae
Genus	Adamsoceras
	Aluveroceras
	Gorbormoceras
	Ormoceras
Species	brevis
	estonicum
	heckeri
	kiaeri
	lapense
	schmidti
	volchovense
Genus	Orthonybyoceras