Monura

Monura is an extinct order of wingless insects in the subclass Dicondylia. They resembled their modern relatives, the silverfish, and had a single lengthy filament projecting from the end of the abdomen. They also had a pair of leg-like cerci and some non-ambulatory abdominal appendages. The largest specimens reached 30 millimetres (1.2 in) or more, not counting the length of the filament.

Monura

Monura is an extinct order of wingless insects in the subclass Dicondylia. They resembled their modern relatives, the silverfish, and had a single lengthy filament projecting from the end of the abdomen. They also had a pair of leg-like cerci and some non-ambulatory abdominal appendages. The largest specimens reached 30 millimetres (1.2 in) or more, not counting the length of the filament.