Prehistoric insect genera

Pseudopulex is an extinct genus of primitive fleas that lived between the Middle Jurassic and Early Cretaceous periods in what is now modern-day China. The Latin root for the name Pseudopulex roughly translates to "false fleas".

Saurophthirus is an extinct genus of giant stem-group flea, and the only member of the family Saurophthiridae. The type species, S. longipes is found in early Cretaceous strata of Baissa, Siberia. Two other species S. exquisitus and S. laevigatus are from the Lower Cretaceous Yixian Formation of China.

Elachistites is an extinct genus of moth in the family Elachistidae. It contains several species described from Baltic amber.

thumb|left|Restoration of Kalligramma being chased by Anurognathus

Archimylacris (meaning "primitive Mylacris", in reference to another species of Carboniferous cockroach) is an extinct genus of cockroach-like blattopterans, a group of insects ancestral to cockroaches, mantids, and termites.

Cimbrophlebia is an extinct genus of Mecoptera which existed from the Jurassic to the Eocene period.

Protophasma (meaning "first phantom") is an extinct genus of protorthopteran insect from the Carboniferous of Europe and North America.

Megatypus is an extinct genus of insect of the order Meganisoptera. Species in this genus were much larger than their modern relatives, dragonflies and damselflies, its single wing length is .

Paraodontomma is an extinct genus of ommatid beetle, it is known from three species, P. burmiticum described in 2017, P. szwedoi described in 2018. and P. leptocristatum in 2021. All 3 species are known from the Cenomanian aged Burmese amber.