Artiopoda - Phacopida - Pterygometopidae
Alternative combinations: Dalmanites achates, Pterygometopus achates
Synonym: Pterygometopus billingsi Wilson 1947
Full reference: E. Billings. 1860. Description of some new species of fossils from the Lower and Middle Silurian Rocks of Canada. Canadian Naturalist and Geologist 5:49-69
Belongs to Achatella according to R. E. Swisher et al. 2016
See also Billings 1860, Foerste 1919 and Jaanusson and Ramsköld 1993
Sister taxa: Achatella (Achatella), Achatella katharina, Achatella kuckersianus, Achatella schmidti, Achatella truncatocaudata, Achatella (Vironiaspis) kegelensis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Ordovician of Canada (5: Ontario, Quebec collections), United States (3: New York, Pennsylvania)
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.