Archaeonassa jamisoni Hammersburg, Hasiotis et Robison, 2018

Diagnosis.—Smooth, curved, asymmetrical furrow in concave epirelief with or without paired convex lateral ridges along sides of furrow that may merge at furrow terminations with massive fill; infill and lateral ridges may be absent, forming depressions with terracing on trace wall.

Description.—Curved, asymmetrical furrow with convex lateral ridges in epirelief. Furrows 47.2–52.6 mm long, 11.2–38.2 mm wide, and 1.4–5.7 mm deep; lateral ridges 2.7–5.2 mm wide and 2.1–3.8 mm thick, merged at furrow terminations.