Genus Typhothauma Ren & Shih, 2005

Type species. Typhothauma yixianensis Ren & Shih, 2005; by original designation and monotypy

Diagnosis. Medium-sized eomeropids (wing 10–18 mm)

with moderate longitudinal and cross-venation. Sc with two long branches, space between Sc 2 and costal margin with two rows of cells. Rs and M dichotomously branched, Rs

with 5 or 6 terminal branches, M with up to 10 branches. Cu 1 and Cu 2 simple, with one row of cells between them.

Included species. Typhothauma yixianensis Ren &

Shih, 2005 (type species), T. excelsa Zhang, Shih & Ren, 2012 (Yixian Formation, NE China), and provisionally? T. agari sp. nov.