Tergomya - Tryblidiida - Proplinidae
Alternative combination: Helcionopsis elegantulum
Invalid subtaxa: Capulus nycteis Cresswell 1893 [replaced name], Helcionopsis nycteis Cresswell 1893 [replaced name], Tryblidium (Metoptoma) nycteis Cresswell 1893 [replaced name]
Full reference: F. Chapman. 1916. New or little-known Victorian fossils on the National Museum. Part XIX - The Yeringian gasteropod fauna. Proceedings of the Royal Society of Victoria 29(1):75-102
Belongs to Vallatotheca according to P. J. Wagner 2023
See also Chapman 1913, Chapman 1916, Cresswell 1893, Talent 1959 and Tassell 1980
Sister taxa: Vallatotheca anticostiensis, Vallatotheca manitoulini, Vallatotheca unguiformis
Distribution: found only at Cave Hill Quarries, Lilydale (Devonian of Australia)
Specimen images are retrieved through the ePANDDA API.
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