[2][3] Titanopterans are related to modern grasshoppers, but were much larger, had proportionally weaker hindlegs that could not allow the animals to leap, and grasping forelegs and elongated mandibles.

The authors argue that stridulation, crepitation, castanet signaling or light flash alone do not fully explains the diversity of structures observed in Titanoptera, and note that both sexes seem to have the fluted region on the forewing.

The hind wing area of it is almost the same as that of Pseudophyllanax imperialis, one of the largest modern Orthoptera, and a poor flier, but Gigatitan is larger in volume.

All known hind wings of Titanoptera, whatever their sizes, have quite reduced vannus, while most extant flying Orthoptera have large ones.

[4] Béthoux (2007) considered that genera in Titanoptera should be included in Orthoptera, and divided from extinct orthopteran family Tchomanvissidae.