Class

Asteroidea Blainville, 1830

https://files.geocollections.info/large/5b/a4/5ba4e2b0-273c-4e44-9fd7-087eb42936a4.jpg

https://files.geocollections.info/large/45/52/4552e888-1c5f-42e5-a1fc-5f7a8858e116.jpg

https://files.geocollections.info/large/82/d1/82d1bb07-b223-42dd-bee9-f4fa021100e1.jpg

https://files.geocollections.info/large/68/0b/680ba275-4f4d-44f7-8027-b3988a35aaf6.jpg

Selection of related publications

Tinn, O., Ainsaar, L. 2014. Asterozoan pedicellariae and ossicles revealed from the Middle Ordovician of Baltica.. Acta Palaeontologica Polonica 59, 2, 353-358. DOI:10.4202/app.2012.0034

Blake, D. B., Rozhnov, S. 2007. Aspects of life mode among Ordovician asteroids: Implications of new specimen from Baltica. Acta Palaeontologica Polonica 52, 3, 519-533.

Hansen, T., Bruton, D. L., Jakobsen. L. 2005. Starfish from the Ordovician of the Oslo Region, Norway. Norwegian Journal of Geology 85, 3, 209-216.

Franzén, C. 1979. Echinoderms. Sveriges Geologiska Undersökning 73, 3, 216-224.

List of species

1. Cnemidactis osloensis Hansen, Bruton et Jakobsen, 2005 | Middle Ordovician

2. Estoniaster maennili Blake et Rozhnov, 2007 | Keila Stage

3. Urasterella ruthveni Forbes, 1848 | Wenlock→Ludlow

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Echinodermata
Subphylum	Eleutherozoa
Class	Asteroidea
Order	Platyasterida
Class	Echinoidea
	Edrioasteroidea
	Holothuroidea
	Ophiocistoidea
	Ophiuroidea