Artiopoda - Agnostida - Ptychagnostidae
Alternative spelling: Agnostus (Ptychagnostus)
Synonyms: Aristarius Öpik 1979, Canotagnostus Rusconi 1951, Triplagnostus (Aristarius) Öpik 1979, Zeteagnostus Opik 1979
Parent taxon: Ptychagnostidae according to H. B. Whittington et al. 1997
See also Ergaliev and Ergaliev 2008, Jell and Adrain 2002, Kobayashi 1935, Öpik 1979, Palmer 1954, Sepkoski 2002 and Westrop et al. 1996
Sister taxa: Acidusus, Allobodochus, Aotagnostus, Goniagnostus, Lejopyge, Myrmecomimus, Onymagnostus, Pseudophalacroma, Tomagnostus, Triplagnostus, Yakutiana
Subtaxa: Ptychagnostus (Acidusus) Ptychagnostus (Ptychagnostus) Ptychagnostus acidusus Ptychagnostus affinis Ptychagnostus akanthodes Ptychagnostus aksayensis Ptychagnostus atavus Ptychagnostus convexus Ptychagnostus cuyanus Ptychagnostus intermedius Ptychagnostus karatauensis Ptychagnostus punctuosus Ptychagnostus richmondensis Ptychagnostus seminula Ptychagnostus sinicus Ptychagnostus spinosus Triplagnostus (Aristarius) aristarius Zeteagnostus incautus Zeteagnostus scarifatus
Ecology: nektonic suspension feeder
Distribution:
• Cambrian of Antarctica (1 collection), Argentina (3), Australia (20), Canada (14: British Columbia, New Brunswick, Newfoundland and Labrador), China (30), Denmark (2), Greenland (3), Italy (1), Kazakhstan (20), Mexico (2), Norway (3), Sweden (1), the United Kingdom (5), United States (34: Alaska, Montana, Nevada, New York, South Carolina, Utah, Vermont)
• Amgan of United States (2: Utah)
• Solvan of Canada (5: Newfoundland and Labrador)
• Delamaran of United States (1: Utah)
Total: 147 collections including 222 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.