Sievertsia 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, Zygocycloides

Subtaxa: Sievertsia concava Sievertsia devonica Sievertsia gotus Sievertsia tartas

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Type: Sievertsia devonica

Ecology: stationary low-level epifaunal

Distribution:

• Devonian of the Czech Republic (2 collections), United States (1: Tennessee)

• Silurian of United States (15: Illinois, Indiana, Iowa, Oklahoma, Tennessee)

• Ordovician of United States (1: Iowa)

Total: 19 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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