Helcionella Grabau and Shimer 1909 (mollusk)

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

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Ecology: slow-moving low-level epifaunal detritivore

Distribution:

• Marjumian of United States (2: New York, Vermont collections)

• Cambrian of Australia (6), Canada (9: Alberta, British Columbia, Newfoundland and Labrador), China (16), the Czech Republic (2), Germany (4), Kazakhstan (1), Mexico (2), Morocco (3), New Zealand (1), Norway (1), the Russian Federation (2), South Korea (1), Spain (2), Sweden (1), United States (12: Idaho, Nevada, New York, Pennsylvania, Vermont, Virginia)

Total: 65 collections including 70 occurrences

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Specimen images are retrieved through the ePANDDA API.


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