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, Perforocycloides, Polytryphocycloides, Zygocycloides
Subtaxa: Sievertsia concava Sievertsia devonica Sievertsia gotus Sievertsia tartas
Type: Sievertsia devonica
Ecology: stationary low-level epifaunal
Distribution:
• Devonian of the Czech Republic (2 collections), United States (2: Ohio, Tennessee)
• Silurian of United States (15: Illinois, Indiana, Iowa, Oklahoma, Tennessee)
• Ordovician of United States (1: Iowa)
Total: 20 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.