Class
Parablastoidea Hudson, 1907
Aiheeseen liittyvät julkaisut
Rozhnov, S. V. 2013. A new Genus of Parablastoidea (Echinodermata) from the Middle Ordovician of Ladoga Glint on the Volkhov River (Ladoga Region). Paleontological Journal 47, 2, 154-161. DOI:10.1134/S003103011302010X
Schmidt, Fr. 1874. Über einige neue und wenig bekannte baltisch-silurische Petrefacten. Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg 21, 11, 1-48.
List of species
1. Blastocystis rossica Jaekel, 1918 | Kunda Stage
2. Kosachenkoastrus volkhovensis Rozhnov, 2013 | Kunda Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Pelmatozoa |
| Class | Cystoidea |
| Parablastoidea | |
| Family | Blastocystidae |
| Class | Paracrinoidea |