Microbrachiidae is an extinct family of tiny, advanced antiarch placoderms closely related to the bothriolepidids.

When Microbrachius was regarded as an Antiarch incertae sedis, the other genera were thought to be very small bothriolepids.

Fossils of this genus are found in the Xindu Formation portion of the Late Emsian-aged Chuandong Assembly, in Pingle, Guangxi Province, China.

A genus of very small antiarchs, originally described from M. dicki, of Upper Givetian strata of Scotland and Estonia, including the John O'Groats sandstone of Caithness, and the Eday beds of the Orkney Islands.

As the generic name suggests, Wudinolepis is found in Wuding, Yunnan, China in a Late Emsian-aged stratum called the Jiucheng Formation.