Several polyplacophoran plates are preserved as external molds in the Lower Permian Rio Genoa Formation, Chubut Province, Argentina. These are the first reported Permian polyplacophorans from South America. The new genus and species Asketochiton chubutensis is described based on this material.
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1 March 2000
LOWER PERMIAN POLYPLACOPHORA (MOLLUSCA) FROM ARGENTINA
R. D. Hoare,
NORA SABATTINI
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