Trilobita - Phacopida - Cheiruridae
Alternative spelling: Spaerexochus
Parent taxon: Sphaerexochinae according to A. W. Owen 1981
See also Jell and Adrain 2002, Raymond 1916, Sepkoski 2002 and Warburg 1925
Sister taxon: Pseudosphaerexochus
Subtaxa: Sphaerexochus arenosis Sphaerexochus arenosus Sphaerexochus atacius Sphaerexochus brandlyi Sphaerexochus bridgei Sphaerexochus britanicus Sphaerexochus calvus Sphaerexochus desertus Sphaerexochus dimorphus Sphaerexochus discrepans Sphaerexochus eurys Sphaerexochus fibrisulcatus Sphaerexochus glaber Sphaerexochus hapsidotus Sphaerexochus hiratai Sphaerexochus hisingeri Sphaerexochus johnstoni Sphaerexochus laciniatus Sphaerexochus latifrons Sphaerexochus molongloensis Sphaerexochus parvus Sphaerexochus planirachis Sphaerexochus pulcher Sphaerexochus romingeri Sphaerexochus scabridus Sphaerexochus tuberculatus Sphaerexochus valcourensis Sphaerometopus
Type: Sphaerexochus mirus
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Whitwellian of Canada (4: Northwest Territories collections)
• Niagaran of United States (1: Indiana)
• Silurian of Australia (5), Canada (15: Northwest Territories, Nunavut), the Czech Republic (12), Greenland (3), Japan (2), Sweden (15), Ukraine (3), United States (17: Arkansas, Illinois, Indiana, Oklahoma, Wisconsin), Uzbekistan (2)
• Chazyan of Canada (15: Northwest Territories, Quebec), United States (12: New York)
• Whiterockian of Canada (7: Quebec), United States (17: New York, Oklahoma, Vermont)
• Arenig of Sweden (1)
• Ordovician of Australia (1), Belgium (1), Canada (13: Newfoundland, Northwest Territories, Quebec), China (13), Iran (1), Ireland (3), Kazakhstan (5), Norway (12), the Russian Federation (2), Sweden (10), the United Kingdom (13), United States (13: Virginia)
Total: 218 collections including 226 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.