Order

Discosorida Flower, 1950

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

Kröger, B., Aubrechtová, M. 2019. The cephalopods of the Kullsberg Limestone Formation, Upper Ordovician, central Sweden and the effects of reef diversification on cephalopod diversity. Journal of Systematic Palaeontology 17, 12, 961-995. DOI:10.1080/14772019.2018.1491899

Kröger, B., Aubrechtová, M. 2018. Cephalopods from reef limestone of the Vasalemma Formation, northern Estonia (latest Sandbian, Upper Ordovician) and the establishment of a local warm-water fauna. Journal of Systematic Palaeontology 16, 10, 799-839. DOI:10.1080/14772019.2017.1347212

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., Zhang, Y., Isakar, M. 2009. Discosorids and Oncocerids (Cephalopoda) of the Middle Ordovician Kunda and Aseri Regional Stages of Baltoscandia and the early evolution of these groups. Geobios 42, 3, 273-292. DOI:10.1016/j.geobios.2008.09.006

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.

Balashov, E. A. 1959. Nekotorye novye vidy nautiloidej ordovika, silura i devona SSSR. Materialy k "Osnovam paleontologii", Bypusk 3, pp. 37-46. Paleontologicheskii Institut Akademii Nauk SSSR.

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. Broeggeroceras contractum Sweet, 1958 | Sandbian

2. Broeggeroceras elongatum Sweet, 1958 | Katian

3. Cyrtogomphoceras troedssoni Teichert, 1930 | Katian

4. Furudaloceras tomtei Kröger et Aubrechtová, 2019 | Sandbian

5. Hemibeloitoceras arduum Kröger et Aubrechtová, 2018 | Keila Stage

6. Hemibeloitoceras molis Kröger et Aubrechtová, 2018 | Keila Stage

7. Hosholmoceras ovalis Kröger, 2025 | Katian

8. Hosholmoceras triangulatum Kröger, 2025 | Katian

9. Kiaeroceras (?) ormsoense Kröger, 2025 | Katian

10. Kiaeroceras frognoyense Strand, 1934 | Ordovician

11. Kiaeroceras heroyense Strand, 1934 | Katian

12. Kiaeroceras kaebliki Kröger, 2025 | Katian

13. Kiaeroceras urgense Kröger, 2025 | Katian

14. Kullsbergoceras nissei Kröger et Aubrechtová, 2019 | Sandbian→Katian

15. Paldoceras neptunsakerense Kröger, Zhang et Isakar, 2009 | Kunda Stage

16. Paldoceras paldiskense Kröger, Zhang et Isakar, 2009 | Aseri Stage→Lasnamägi Stage

17. Stokesoceras balticum Balashov, 1959 | Adavere Stage

18. Strandoceras kalevipoegi Kröger, 2025 | Katian

19. Strandoceras kohilense Kröger, 2025 | Katian

20. Strandoceras muhvi Kröger, 2025 | Katian

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Mollusca
Class	Cephalopoda
Subclass	Multiceratoidea
Order	Bisonoceratida
	Cyrtocerinida
	Discosorida
Family	Apocrinoceratidae
	Cyrtogomphoceratidae
	Lowoceratidae
	Phragmoceratidae
	Westonoceratidae
Order	Ellesmerocerida
	Oncocerida