Polytryphocycloides 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, Sievertsia, Zygocycloides

Subtaxa: Polytryphocycloides billingsi Polytryphocycloides davisii Polytryphocycloides depressus Polytryphocycloides grandis Polytryphocycloides huronensis Polytryphocycloides lindstroemi

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Type: Polytryphocycloides huronensis

Ecology: stationary low-level epifaunal


• Silurian of Sweden (2 collections), United States (4: Indiana, Iowa)

• Ordovician of Canada (1: Ontario), United States (1: Missouri)

Total: 8 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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