[7] The genus is known solely from Early Cambrian fossils found in North America, Greenland, Europe, the Middle East, and Asia.

[10] The structuring is similar to shell layering found in the extinct genera Anabarella and Watsonella which is thought to suggest members of the phylum Mollusca developed nacre independently several times.

[10] Due to the size and age of the fossil specimens, Fordilla are included as part of the Turkish Small shelly fauna.

The original description cited the placement and more rounded outline of the front adductor scar along with the morphology of dorsal edge as reason for erection of the new species.

[8] The description was based on a group of five fossils found in Cambrian sediments exposed at Troy, New York and purchased by S.W.

Fossils form Hartshill, North Warwickshire, England and the lower Cambrian of Portugal have been tentatively placed into Fordilla without assignment to species.

[9] The cryptic genus Buluniella and species B. borealis was described in 1986 by V. Jermak from three fossils found in Northern Siberia.

The two right and one left disarticulated valves known show a slightly convexity of the hinge, central umbo and lack of a row of muscle scars were used to the genus from Fordilla.