Genus: Megacnemus HUENE, 1955 (nomen dubium)
Etymology: Greek, mega, "large, big,"

Species: grandis HUENE, 1955
Etymology: Latin, grandis, "grown-up, large."

Holotype:

Locality: Gogolin, Keuperkalk, Krappitz, Poland.

Horizon: Lower Muschelkalk.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Lower Middle Triassic.

Material: Left femur.