Family

Armenoceratidae Troedsson, 1926

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, 1-169. DOI:10.5852/ejt.2025.978.2801

Kiselev, G. N., Sinicyna, I. N., Isakar, M. A., Mironova, M. G., Saladzhius, V. Y. 1990. Atlas mollûskov verhnego ordovika i silura severo-zapada Vostočno-Evropejskoj platformy. pp. 1-80. Leningrad University.

Balashov, Z. G. 1971. O sistematičeskom položenii i stratigrafičeskom značenii roda Eushantungoceras (nadotrâd Actinoceratoidea). Voprosy paleontologii VI, 61-65. Izdatel'stvo Leningradskogo Universiteta.

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

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. Armenoceras holtedahli Strand, 1934 | Ordovician

2. Eushantungoceras pseudoimbricatum (Barrande, 1870) | Ludlow

3. Eushantungoceras uralicum Balashov, 1971 | upper Silurian

4. Nybyoceras balticum (Troedsson, 1926) | Pirgu Stage

5. Nybyoceras bekkeri Troedsson, 1926 | Pirgu Stage

6. Nybyoceras holmi Sweet, 1958 | Darriwilian

7. Nybyoceras intermedium Teichert, 1930 | Pirgu Stage

8. Nybyoceras troedssoni Strand, 1934 | Ordovician

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Cephalopoda
Subclass	Actinoceratoidea
Order	Actinocerida
Family	Actinoceratidae
	Armenoceratidae
Genus	Armenoceras
	Eushantungoceras
	Nybyoceras
Family	Gonioceratidae
	Huroniidae
	Ormoceratidae
Species	Sactoceras