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Genus of Eurypterid
of the telson there was a keel, which probably kept Orcanopterus steady in the water. Orcanopterus' genital operculum was located on the underside of the
Orcanopterus
Extinct family of arthropods
in the suborder Eurypterina. The earliest known member of the group, Orcanopterus, has been recovered from deposits of Katian (Late Ordovician) age and
Waeringopteridae
Extinct genus of arthropods
Adelophthalmidae, despite noting strong similarities to the waeringopterid Orcanopterus. Later phylogenetic analyses that incorporated more data repeatedly recovered
Eysyslopterus
Genus of arthropods (fossil)
groups is confirmed partly due to basal members of all three groups, Orcanopterus, Eysyslopterus and Herefordopterus, sharing similar carapace shapes.
Adelophthalmus
Orcanopterus, a mid-sized waeringopterid eurypterid
List_of_lagerstätten
Geologic formation in the United States and Canada
Arthropods Genus Species Presence Material Notes Images Orcanopterus O. manitoulinensis Kangawong Submember, Manitoulin Island. A eurypterid.
Georgian_Bay_Formation
Orcanopterus.
List_of_eurypterid_genera
Family of eurypterids
closely related Pterygotioidea (Herefordopterus) and the waeringopteroids (Orcanopterus) has been shown as almost identical, only differing between them by the
Adelophthalmoidea
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