Trilobita - Asaphida - Nileidae
Parent taxon: Nileidae according to P. A. Jell and J. M. Adrain 2002
See also Fortey 1975 and Sepkoski 2002
Sister taxa: Aocaspis, Barrandia, Berkutaspis, Borthaspidella, Bumastides, Elongatanileus, Homalopteon, Illaenopsis, Kodymaspis, Lakaspis, Neopsilocephalina, Nileidae stenorhachis, Nileus, Parabarrandia, Paraperaspis, Petrbokia, Platypeltoides, Poronileus, Psilocephalinella, Shenjiawania, Symphysurina, Symphysurus, Varvia
Subtaxa: Peraspis erugata Peraspis kolouros Peraspis lineolata Peraspis omega Peraspis yukonensis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Ordovician of Canada (3: Newfoundland and Labrador, Northwest Territories, Yukon collections), China (1), the United Kingdom (1), United States (7: British Columbia, California, Nevada)
• Llandeilo of Canada (1: Northwest Territories)
• Whiterockian of Canada (6: Newfoundland and Labrador), Norway (4), United States (2: Nevada)
Total: 25 collections including 26 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.