Helcionelloida - Helcionellida - Helcionellidae
Alternative combinations: Aequiconus taconica, Mackinnonia taconia, Mackinnonia taconica, Stenotheca taconica
Full reference: E. Landing and K.E. Bartowski. 1996. Oldest shelly fossils from the Taconic Allochthon and late Early Cambrian sea-levels in eastern Laurentia. Journal of Paleontology 70(5):741-761
Belongs to Davidonia according to P. J. Wagner 2023
See also Claybourn et al. 2019, Landing and Bartowski 1996, Landing et al. 2002, Parkhaev 2001, Peel 2021, Skovsted 2004, Skovsted and Peel 2007 and Wotte 2006
Sister taxon: Davidonia rostratum
Type specimen: NYSM 15529, a shell. Its type locality is E-Bar-4.0 - Keeler's Eskimo Bar ice cream stand, which is in a Dyeran slope siltstone in the Browns Pond Formation of New York.
Distribution:
• Cambrian of Canada (2: Newfoundland and Labrador, Quebec collections), Greenland (9), United States (6: New York)
Total: 17 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.