Three of the genera included in the
Mycteroptidae -
Mycterops,
Woodwardopterus, and
Megarachne - might represent different
ontogenetic stages of each other based on the sizes of the referred specimens and the patterns of mucronation. This would sink the genera
Woodwardopterus and
Megarachne into
Mycterops.
Mycterops whitei is a fragmentary species that might not be referrable to the genus at all if more complete specimens show that it has a caudal postabdomen. •
Mycterops matthieui Pruvost, 1924 — Carboniferous,
Belgium. •
Mycterops ordinatus Cope, 1886 — Carboniferous,
Pennsylvania (
United States).
Invalid/reassigned species: • '
"Mycterops
" blairi'''
Waterston, 1968 — Carboniferous, Scotland, assigned to Glyptoscorpius (=Hibbertopterus''?). • '
"Mycterops
" whitei'''
Schram, 1984 — Carboniferous, Iowa (United States), not congeneric with M. ordinatus'', perhaps a crustacean and not a eurypterid. ==See also==