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, Sievertsia, Zygocycloides
Subtaxa: Polytryphocycloides billingsi Polytryphocycloides davisii Polytryphocycloides depressus Polytryphocycloides grandis Polytryphocycloides huronensis Polytryphocycloides lindstroemi
Type: Polytryphocycloides huronensis
Ecology: stationary low-level epifaunal
Distribution:
• 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
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.