Zygocycloides Smith and Paul 1982

Cyclocystoidea - Cyclocystoididae

Full reference: A. B. Smith and C.R.C. Paul. 1982. Revision of the Class Cyclocystoidea (Echinodermata). Philosophical Transactions of the Royal Society of London, Series B 296:577-679

Parent taxon: Cyclocystoididae according to A. B. Smith and C.R.C. Paul 1982

See also Sepkoski 2002

Sister taxa: Actinodiscus, Apycnodiscus, Cyclocystoides, Diastocycloides, Monocycloides, Narrawayella, Nicholsodiscus, Polytryphocycloides, Sievertsia

Subtaxa: Zygocycloides magnus Zygocycloides marstoni Zygocycloides raymondi Zygocycloides variabilis

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Type: Zygocycloides variabilis

Ecology: stationary low-level epifaunal

Distribution: found only at Arnheim - type Cincinnatian (Ordovician of Ohio)

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