Order

Hemistreptocrinida Arendt, 1976

Aiheeseen liittyvät julkaisut
Arendt, Yu. A., Rozhnov, S. V. 1995. On the hemistreptocrinoids (Echinodermata). Paleontologicheski Zhurnal 1, 119-122.
Arendt, Yu. A. 1976. Ordovikskie iglokožie gemistreptokrinoidei. Bulletin of the Moscow Society of Naturalists. Geological series 51, 2, 63-84.
List of species
2. Hemistreptocrinus jaekeli Arendt, 1976 | Kunda StageUhaku Stage
3. Nonparactocrinus laevis (Jaekel, 1918) | Aseri StageUhaku Stage
4. Paractocrinus tuberculatus Jaekel, 1918 | Volkhov StageOandu Stage
5. Parorthocrinus liber Jaekel, 1918 | Volkhov StageKunda Stage
6. Tetractocrinus compactus Jaekel, 1918 | Volkhov StageKunda Stage