Gastropoda - Caenogastropoda - Coelostylinidae
Alternative combinations: Eustylus triadicus, Turristylus triadicus
Synonym: Spirostylus radiciformis Böhm 1895
Full reference: E. Kittl. 1894. Die Gastropoden der Schichten von St. Cassian der südalpinen Trias. III. Theil. Annalen des Kaiserlich-Königlischen Naturhistorischen Hofmuseums 9:143-277
Belongs to Trypanostylus according to S. Dominici 2024
See also Batten 1985, Böhm 1895, Kittl 1894, Kittl 1899, Nützel et al. 2003 and Nützel and Kaim 2014
Sister taxa: Trypanostylus ascendens, Trypanostylus caravinensis, Trypanostylus curretensis, Trypanostylus geographicus, Trypanostylus haueri, Trypanostylus konincki, Trypanostylus minor, Trypanostylus obliquus, Trypanostylus pradeanus, Trypanostylus pseudoscalatus, Trypanostylus varieplicatus, Trypanostylus waageni, Eustylus lepsii, Eustylus richthofeni, Eustylus semiglaber, Eustylus militaris, Eustylus albertii, Eustylus ladinus, Eustylus zitteli
Type specimens:
- Trypanostylus triadicus: NHMW 1899/V/530. Its type locality is St. Cassian (Wiener Hofsmuseums coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.
- Spirostylus radiciformis: Its type locality is Marmolata (Salomon coll), which is in a Ladinian carbonate limestone in the Marmolata Formation of Italy.
Average measurements (in mm): shell diameter 2.10
Distribution:
• Triassic of Hungary (3 collections), Italy (7), United States (1: Oregon)
• Permian of Malaysia (1)
Total: 12 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.