Family Spirobolidae Bollman 1893 (millipede)
Myriapoda - Spirobolida - Spirobolidae
Parent taxon: Spirobolida according to R. L. Hoffman 1969
Sister taxa: none
Subtaxa: Hiltonius Spirobolus
Ecology:
Distribution: found only at Rancho La Brea (UCMP collection) (Quaternary of California)