Dasyleptus

Dasyleptus is an extinct genus of wingless insects in the order Archaeognatha, and the only member of the family Dasyleptidae. They resembled their modern relatives 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 mm or more, not counting the length of the filament. Dasyleptus was formerly placed in its own extinct order, Monura, but this is now treated as a suborder of Archaeognatha.

Species
The genus includes the following species:


 * Dasyleptus artinskianus Engel, 2009 – Early Permian (Artinskian), Wellington Formation, Kansas, United States
 * Dasyleptus brongniarti Sharov, 1957 – Middle Permian (Roadian), Mitina Formation, Kuznetsk Basin, Russia
 * Dasyleptus lucasi Brongniart, 1885 (type species) – Late Carboniferous (Gzhelian), Commentry Shales, France
 * Dasyleptus noli Rasnitsyn, 2000 – Late Carboniferous (Gzhelian), Commentry Shales, France
 * Dasyleptus rowlandi Rasnitsyn in Rasnitsyn et al., 2004 – Early Permian (Asselian), Bursum Formation, New Mexico, United States
 * Dasyleptus sharovi (Durden, 1978) – Early Permian (Artinskian), Wellington Formation, United States
 * Dasyleptus sinensis Liu et al., 2021 – Late Permian/Early Triassic, Kayitou Formation, China
 * Dasyleptus triassicus Bechly & Stockar, 2011 – Middle Triassic (Ladinian), Meride Limestone, Monte San Giorgio, Switzerland