Palaeorehniidae

monotypic

Haglidae.^[2] Keith Kevan and Dennis Wighton (1981) described a new North American genus, Albertoilus, that they placed in Prophalangopsidae. Two years later they revisited Palaeorehniinae, which no longer included the type genus, and as such they coined the replacement name Zeuneropterinae for the group in Gryllacrididae, which they moved Albertoilus to.^[3] The placement and composition of these groups were not addressed again until 2022 when S. Bruce Archibald, Jun-Jie Gu, and Rolf Mathewes described two new genera from Ypresian sites in British Columbia and Washington state. With the description of Republicopteron and Ypopteron they reassessed the generic composition of Zeuneropterinae and its possible superfamily relationships. They deemed Palaeorehnia to be related to Albertoilus, Zeuneroptera and their two new genera, while also elevating the group as a whole from a subfamily to a family. They revived the original subfamily name Palaeorehniinae and emended it to Palaeorehniidae to reflect the re-inclusion of the type genus Palaeorehnia and the groups new family status. Due to the forewing venation of the known specimens. The superfamily Stenopelmatoidea is noted to have long CuA+CuPaα, CuPaβ, CuPb, and 1A wing veins, a feature that only some palaeorehniids show, however others do not, with venation that is closer in aspect to Hagloidea appearing. Due to the incomplete nature of all known Palaeorehniidae fossils, Archibald, Gu, and Mathewes decided to leave the family without a superfamily placement in Ensifera, and discussed the possibilities of placement within Hagloidea, Stenopelmatoidea, or an intermediate superfamily or clade that is yet unnamed.^[2]

Late Eocene, Priabonian sediments of the Florissant Formation in Colorado.^[2]

monotypic genera:^[5]