Artiopoda - Agnostida - Ptychagnostidae
Alternative combination: Agnostus richmondensis
Full reference: C. D. Walcott. 1884. Paleontology of the Eureka district. United States Geological Survey Monograph 8(8):1-298
Belongs to Ptychagnostus according to A. R. Palmer 1954
See also Walcott 1884
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 seminula, Ptychagnostus sinicus, Ptychagnostus spinosus, Triplagnostus (Aristarius) aristarius, Zeteagnostus incautus, Zeteagnostus scarifatus
Ecology: nektonic suspension feeder
Distribution:
• Cambrian of United States (3: Utah collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.