Biformites insolitus Linck, 1949

Diagnosis: Biformiteswith delicate, ideally bisymmetrically ar-ranged, transverse (elongate, or polygonal to round) protuberances (emended from Schlirf, 2012).

Diagnosis: Narrow, vermiform, slightly tapering, horizontal, straight to curved structures with delicate, ideally bisymmetrically arranged, perpendicular elongate, or polygonal to round, positive or negative protuberances. Preserved as positive hyporeliefs.

Description.-An endogenic and intergenic burrow preserved as a rounded convex hyporelief on the sole of thin bedded sandstones. Tubular sand and mud packed burrow 7 mm across and 10 to 20 mm long with a smooth, conical terminus. Base of terminal cone reduced approximately 1 mm less than remainder of burrow. Tip of cone also reduced slightly. Surface of remainder of burrow transversely ringed with rounded to subrounded ridges, 1 to 2 mm wide. Semiradial arrangement of burrows common.