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New Genera of Five-Armed and Armless Crinoids from the Lower Permian of the Urals
Y. Arendt
1996
Article
Paleontological Journal
30(2):201-206
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Taxa discussed in this work:
Cyathocrinida
Hypocrinacea
Hypocrinidae
Koivocrinus
Parathetidicrinus
Sycocrinitidae
Thetidicrininae
Taxonomy:
Hypocrinacea
belongs to
Cyathocrinida
- Arendt (1996)
Hypocrinidae
belongs to
Hypocrinacea
- Arendt (1996)
Thetidicrininae
belongs to
Hypocrinidae
- Arendt (1996)
Parathetidicrinus
belongs to
Thetidicrininae
- Arendt (1996)
Sycocrinitidae
belongs to
Hypocrinacea
- Arendt (1996)
Koivocrinus
belongs to
Sycocrinitidae
- Arendt (1996)