Triassic

No Stromboidea are known from the Triassic at the moment. A discussion about ancestors of Stromboidea is found at K. Bandel (1991).

• Über triassische "Loxonematoidea" und ihre Beziehungen zu rezenten und paläozoischen Schnecken [Triassic Loxonematoidea and Their Relationship to Recent and Paleozoic Snails]. Paläontologische Zeitschrift 65(3/4): 239-268.

Bandel claims that Cassianozyga from the triassic is an early member of Stromboidea.