Phylum: Mollusca
Class: Gastropoda
Order: Murchisoniina
Family: Lophospiridae (Wenz, 1938)
Cincinnatian Genera: Lophospira, Paupospira

Geologic Range
Ordovician – Middle Triassic

Common Paleoecology
Lophospiridae is an extinct family of facultatively mobile epifaunal suspension feeders

Description of the Family

  • Shell with labral sinus
  • Sinus culminates in median angulation
  • Selenizone/pseudoselenizone is convex
  • Variable shell form
  • Whorls may be disjunct in later growth stages or throughout

Published Descriptions

Treatise on Invertebrate Paleontology, Part I (1960):

  • Shell with median labral sinus that generally culminates in a median angulation, and commonly with angulations both above and below; selenizone or pseudoselenizone convex; form of shell variable, whorls may be disjunct in late growth stages or throughout.