Artiopoda - Agnostida - Ptychagnostidae
Alternative combinations: Agnostus seminula, Onymagnostus seminula
Belongs to Ptychagnostus according to S. R. Westrop et al. 1996
Sister taxa: 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 sinicus, Ptychagnostus spinosus, Zeteagnostus incautus, Zeteagnostus scarifatus, Triplagnostus (Aristarius) aristarius
Ecology: nektonic suspension feeder
Distribution:
• Cambrian of Australia (3 collections), Canada (4: Newfoundland and Labrador), United States (4: Nevada, Utah)
• Amgan of United States (2: Utah)
• Solvan of Canada (5: Newfoundland and Labrador)
Total: 18 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.