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Cupulocrinid crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota
J. C. Brower
1992
Article
Journal of Paleontology
66:99-128
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Taxonomy:
Palaeocrinus angulatus
belongs to
Dendrocrinus
- Billings (1857)
Cupulocrinus humilis
belongs to
Dendrocrinus
- Billings (1857)
Porocrinus conicus
belongs to
Porocrinus
- Billings (1857)
Hybocrinus conicus
belongs to
Hybocrinus
- Billings (1857)
Carabocrinus radiatus
belongs to
Carabocrinus
- Billings (1857)
Praecupulocrinus conjugans
belongs to
Praecupulocrinus
- Brower (1992)