Speightiidae is an extinct taxonomic family of fossil sea snails, marine gastropod mollusks.This family is not assigned to a superfamily. It has been traditionally classified near the family Turridae. But in 1993 it was shown that many, if not all, species that were placed in this family should instead be placed in the family Fasciolariidae.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0