ammonites
Obtusoconus Yü 1979 (mollusk)

Helcionelloida - Helcionellida - Helcionellidae

Synonym: Hematoconus Chen and Xiong 1984

Full reference: W. Yü. 1979. Earliest Cambrian monoplacophorans and gastropods from western Hubei with their biostratigraphical significance. Acta Palaeontologica Sinica 18(3):233-270

Parent taxon: Yangtzeconinae according to P. Y. Parkhaev and Y. Demidenko 2010

Sister taxa: none

Subtaxa: Hematoconus pygmaeus, Obtusoconus ampla, Obtusoconus brevis, Obtusoconus foliaceus, Obtusoconus grossicostus, Obtusoconus honorabilis, Obtusoconus paucicostatus, Obtusoconus reduncus

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Type: Obtusoconus paucicostatus

Ecology: slow-moving low-level epifaunal detritivore