Genus: Arminisaurus SACHS & KEAR, 2017
Etymology: Armini-, referring to Arminius (Armin), chieftain of the Germanic Cherusci tribe who defeated a Roman army in the Battle of the Teutoburg Forest, and Latinized Greek, -sauros, 'lizard'.

Species: schuberti SACHS & KEAR, 2017
Etymology: In honor of Mr. Siegfried Schubert, who recovered the holotype NAMU ES/jl 36052 for science and has contributed to palaeontological research in the Bielfefeld region for the last decade.

Holotype: NAMU ES/jl 36052

Locality: Beukenhorst-II claypit Jöllenbeck District, Bielefele, Northe Rhine-Westphalia State, northwestern Germany.

Horizon: Lower Lias.

Biostratigraphy: Amaltheus subnodosus subzone, Amaltheus margaritatus Zone.

Age: Upper Pliensbachian Stage, Upper Lias Epoch, Early Early Jurassic.

Material: Posterior section of the right mandibular ramus with the surangular, angular, prearticular and articular, eight isolated teeth and other dental fragments, ten cervical vertebrae, an incomplete pectoral vertebra, at least seven dorsal vertebrae, seven caudal vertebrae and various cervical-, dorsal-, possible sacral- caudal- and gastral ribs, possible clavicle and interclavicle, together with the complete right and partial left scapula, a propodial, epipodial, sic mesopodials and 19 phalanges. Other indeterminate bone fragments were also recovered.