A Middle Triassic flora is described from the southeastern margin of the Coonamble Lobe of the Great Artesian Basin. The range of variation within populations of Dicroidium and Lepidopteris is noted and thirty-five forms are described, including Todites pattinsoniorum sp. nov., Dicroidium shirleyi sp. nov., Lepidopteris africana (du Toit) comb. nov., L. murtonii (Dun) comb. nov., Pseudoctenis grossa sp. nov., Ginkgoites semirotunda sp. nov. and Sphenobaiera ugotheriensis sp. nov.
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W. B. Keith Holmes (1982) studied this question.
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