ammonites
Lemmatonympha gracilissima Aristov et al. 2006 (rock crawler)

Insecta - Notoptera - Lemmatophoridae

Full reference: D. S. Aristov, V. G. Novokshonov, and N. N. Pan'kov. 2006. Taxonomy of the Fossil Grylloblattid Nymphs (Insecta: Grylloblattida). Paleontological Journal 40(1):79-89

Belongs to Lemmatonympha according to D. S. Aristov et al. 2006

Sister taxon: Lemmatonympha gracilis

Type specimen: PIN 1631/372, a nymph (well-preserved nymph). Its type locality is Khal'meryuskoye, borehole KhK-650, depth 187 m, which is in a Kungurian terrestrial horizon in the Lek-Vorkuta Formation of the Russian Federation.

Ecology:

Average measurements (in mm): nymph body length 16.0