Helcionelloida - Helcionellida - Helcionellidae
Synonym: Pseudotheca Redlich 1899
Full reference: A. W. Grabau and H. W. Shimer. 1909. North American index fossils, invertebrates 1-909
Parent taxon: Helcionellinae according to P. Y. Parkhaev and Y. Demidenko 2010
See also Bengtson 1992, Bouchet et al. 2005, Cobbold 1935, Feng et al. 2000, Gubanov et al. 2004, Jacquet and Brock 2016, Knight et al. 1960, Kobayashi 1958, Parkhaev 2002, Runnegar and Jell 1976 and Sepkoski 2002
Sister taxa: Absidaticonus, Aegitellus, Anabarella, Anabaroconus, Anhuiconus, Anuliconus, Asiapatella, Asperconella, Auricullina, Bemella, Calyptroconus, Capitoconus, Chuiliella, Cycloholcus, Daedalia, Davidonia, Emarginoconus, Eocyrtolites, Fenqiaronia, Figurina, Guadalquivirospira, Hampilina, Hampilininae, Hispanoconus, Hujiagouella, Igorella, Ilsanella, Kuonamkaella, Lenoconus, Leptostega, Manasoconus, Marocella, Minastirithella, Miroconulus, Nyuella, Obtusoconus, Oelandia, Oelandiella, Papilloconus, Parapelagiella, Pararaconus, Paucella, Pedrocheotheca, Perssuakiella, Postacanthella, Prosinuites, Protowenella, Pseudopollicina, Randomia, Securiconus, Tannuella, Totoralia, Truncatoconus, Tuoraconus, Yangtzeconinae
Subtaxa: Helcionella antiqua Helcionella aspera Helcionella capula Helcionella explanata Helcionella histosia Helcionella kunyangensis Helcionella lemdadensis Helcionella pricei Helcionella radiata Helcionella sidingshanensis Helcionella subrugosa Helcionella tianzhushanensis Helcionella waageni Helcionella xinjiangensis Helcionella yunnanensis
Ecology: slow-moving low-level epifaunal detritivore
Distribution:
• Amgan of the Czech Republic (1 collection)
• Solvan of Australia (1), Canada (1: British Columbia), the Czech Republic (1), Kazakhstan (1), Morocco (3)
• Ordian of Australia (1)
• Delamaran of Canada (2: British Columbia), Mexico (2), United States (1: Virginia)
• Cambrian of Australia (4), Canada (6: Alberta, Newfoundland and Labrador), China (16), Germany (4), New Zealand (1), Norway (1), the Russian Federation (2), South Korea (1), Spain (2), Sweden (1), United States (13: Idaho, Nevada, New York, Pennsylvania, Vermont, Virginia)
Total: 65 collections including 70 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.