Very old patelliform gastropods from the Early Cambrian of China: Reconsideration of the systematic position of ArchaeotremariaWA Museum Records and Supplements | Updated 3 years agoABSTRACT – Archaeotremaria polytremata Yu from the Lower Cambrian Maidiping Member of the Hongchunping Formation of Sichuan, China, was originally described as a primitive monoplacophoran. A restudy of the holotype and paratype has led to a reconsideration of its systematic position. A. polytremata has a patelliform shell with a series of median-dorsal tremata extending from the apex to the anterior margin and periodic rugae. The species is now reassigned to the Gastropoda, rather than Monoplacophora. Author(s) Yu Wen Volume Records 21 : Part 3 Article Published 2002 Page Number 299 DOI 10.18195/issn.0312-3162.21(3).2002.299-306 Very old patelliform gastropods from the Early Cambrian of China: Reconsideration of the systematic position of Archaeotremaria Download 2.7 MB To request an accessible version of this pdf please email firstname.lastname@example.org View the discussion thread.