Rhynchonellata - Athyridida - Athyrididae
Alternative combinations: Athyris subtriangularis, Composita subtriangularis
Belongs to Spirigerella according to M. E. Clapham 2015
See also Huang 1933, Tong 1978 and Zeng et al. 1995
Sister taxa: Spirigerella alata, Spirigerella bellistriata, Spirigerella derbyi, Spirigerella discors, Spirigerella fusiformis, Spirigerella gigas, Spirigerella grandis, Spirigerella heibayideensis, Spirigerella hybrida, Spirigerella media, Spirigerella mendungensis, Spirigerella minuta, Spirigerella numismalis, Spirigerella obovata, Spirigerella ovoidalis, Spirigerella paraliensis, Spirigerella pertumida, Spirigerella praelonga, Spirigerella proxima, Spirigerella rectimarginata, Spirigerella subtriquetra, Spirigerella teseroi
Distribution:
• Permian of China (7 collections), Iran (1), Pakistan (1)
Total: 9 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.