PaleoDB taxon number: 288045
Full reference: G. F. Matthew. 1895. Organic remains of the Little River Group, no. IV. Transactions of the Royal Society of Canada, Second Series 1:273-279
Sister taxa: Acari, Acaromorpha, Arthrolycosa prolifera, Cretopilio, Haplocnemata, Palpigradi, Pantetrapulmonata, Parasitiformes, Phalangiotarbida, Pleurolycosa, Podurites, Poecilophysidea, Pseudoscorpionida, Ricinulei, Stomothecata
Type specimen: NBMG 3017, an exoskeleton. Its type locality is Fern Ledges, Plant bed 2, Carleton, Saint John, which is in a Westphalian A estuary/bay shale in the Lancaster Formation of Canada.