Trilobita - Proetida - Hystricuridae
Full reference: R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161
Parent taxon: Hystricuridae according to J. M. Adrain et al. 2003
See also Jell and Adrain 2002 and Sepkoski 2002
Sister taxa: Amblycranium, Etheridgaspis, Glabretina, Guizhouhystricurus, Hillyardininae, Hintzecurinae, Holubaspis, Hystricurinae, Hystricurus, Litzicurus, Millardicurus, Nyaya, Omuliovia, Paenebeltella, Parahystricurus, Paraplethopeltis, Rollia, Svalbardicurus, Taoyuania, Tasmanaspis
Subtaxa: Psalikilus hestoni Psalikilus paraspinosum Psalikilus pikum Psalikilus spinosum Psalikilus typicum
Type: Psalikilus typicum
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Arenig of Canada (1: Newfoundland and Labrador collection), United States (3: Nevada, North Dakota)
• Ordovician of United States (41: Idaho, Montana, Nevada, Utah)
• Canadian of United States (1: Maryland)
• Ibexian of United States (1: Nevada)
Total: 47 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.