The Genera, Species and Subspecies of the Family Eurypteridae, Burmeister, 1845

A synopsis, review and reclassification of all eurypterids referred to the family Eurypteridae, Burmeister, 1845. Four genera, Eurypterus, Onychopterella, Erieopterus n. gen., and Tylopterella are recognized, and all species are reclassified. One new species and three new subspecies are described; and additional specimens and morphological details hitherto unknown are discussed. A complete check-list and bibliography of the family are included.