Lockeia James, 1879

Diagnosis.—Amygdaloidal- to ovoid-shaped mounds (convex hyporelief ) or depressions (concave epirelief ) that taper at one or both ends; surface usually smooth but may be irregular; may have a medial longitudinal crest (hyporelief ) or groove (epirelief ) (Osgood, 1970; Fillion & Pickerill, 1990; Mángano & others, 2002].

Emended diagnosis: Bilaterally symmetrical, elongated, commonly almond-shaped, heart-shaped, club-shaped to dumbbell-like or rarely of triangular shape, with smooth margin; predominantly preserved as isolated or row-like arrangements of, hypichnial mounds; single segments commonly with a distinct median crest. Vertical spreitemay be present.