The vesicle wall is relatively thin and large secondary folds are generally present. Sub-cylindrical oral tube with straight sides and sometimes with rather strongly flaring collarette having a straight or fimbrate aperture.
Ornamentation consists of small cones, simple spines and a few lambda spines.
Some species appear carinate. However, the sharp prominences on the chamber are due to an inward collapse of the base. Sphaerochitina lepta is a rather rare member of the Ashgill chitinozoan fauna of the Nevada study area. Sphaerochitina lepta has only been recovered from the Hanson Creek Formation in the Nevada study area.