EL GENERO AMPHIGRAPTUS LAPWORTH (GRAPTOLITHINA) EN EL ORDOVICICO ARGENTINO

Alfredo J. Cuerda

Abstract


A graptolite of the genus Amphigraptus Lapworth from the lower levels of the caradocian sequence exposed at San Isidro, Mendoza, is described. The fossil-bearing strata are ascribed to the Zone of Nemagraptus gracilis.

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