PaleoDB taxon number: 347136
Full reference: I. Thompson and D. S. Jones. 1980. A possible onychophoran from the middle Pennsylvanian Mazon Creek beds of northern Illinois. Journal of Paleontology 54:588-596
Sister taxa: none
Type specimen: FMNH PE 29049. Its type locality is Pit 11, Braidwood, Mazon Creek (Piecko coll), which is in a Westphalian D deltaic mudstone in the Carbondale Formation of Illinois.