GRAPTOLITE BIOSTRATIGRAPHY OF EARLY LAND PLANTS FROM VICTORIA, AUSTRALIA

Abstract

SUMMARY After a complete re-examination and reappraisal of all the plants and graptolites at the two critical localities of Limestone Road and Ghin Ghin, it is concluded that the overwhelming evidence indicates that the Lower Plant Assemblage of the Yea District, Victoria, Australia is Silurian (Ludlow) in age and that the earliest Baragwanathia longifolia Lang & Cookson occurs some 10Ma earlier than the unquestionably Devonian occurrences of the same species in the Upper Plant Assemblage in the same region.