Classification of Edgecombe et al. 1998
G. †Platycalymene Shirley 1936
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†Platycalymene trapezoidalis Baldis and Pothe 1995
Invalid names: Sulcocalymene Baldis and Pothe 1995 [synonym]
G. †Walencrinuroides Lespérance and Desbiens 1995
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†Walencrinuroides autochthon Tripp 1962
†Walencrinuroides polypleura Tripp 1967
Fm. †Encrinuridae Angelin 1854
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G. †Frencrinuroides Lespérance and Desbiens 1995
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†Frencrinuroides edseli Edgecombe et al. 1998
†Frencrinuroides tholus Evitt and Tripp 1977
†Frencrinuroides torulatus Evitt and Tripp 1977
G. †Prophysemataspis Lespérance and Desbiens 1995
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†Prophysemataspis neuter Evitt and Tripp 1977