Aenigmaspina pantyffynnonensis was named by Patrick et al. (2019) [A crurotarsan with a distinctive subrectangular spine table on the cervical and anterior dorsal vertebrae. Cervical vertebrae spine tables have anterior and posterior projections along their midline. Spine tables are found as far back as the fourth dorsal vertebra, and they show a deeply angled ‘V’ shape in anterior and posterior views, in which each half of the spine table is angled at up to 45° from the horizontal in cervical vertebrae; the more posterior spine tables have a more open ‘V’ shape, in which the two leaves of the spine table are closer to horizontal. No other described archosaur has such a deeply angled ‘V’-shaped spine table. The osteoderms bifurcate posteriorly and have a ventral longitudinal keel, thickened at the point of bifurcation, which attached precisely to a groove formed by the spine table. The scapula blade, straight in anterior and posterior views, is ca. 10–12 times as long as the narrowest width of the shaft and ca. 3.2–4.5 times as long as the greatest width of its proximal portion.]. Its type specimen is NHMUK P9/3a, a set of postcrania (12 articulated or near-articulated anterior vertebrae, 12 ribs, eight osteoderms, one right scapula, and nine additional fragmentary bones), and it is a 3D body fossil. Its type locality is Pant-y-ffynnon Quarry, Bonvilston, which is in a Carnian fissure fill limestone/marl in the United Kingdom.