Abstract
Abstract Coal measures conformably underlying marine rocks of Ladinian age in Tank Gully have yielded a diverse assemblage of fossil plants. The presence of Dicroidium and Johnstonia leaves and corystosperm fructifications, supported by other remains (Neocalamites, Cladophlebis, Lobifolia and Sphenobaiera), indicate correlation of the flora with the Dicroidium odontopteroides zone of Late Anisian to Ladinian age. Several taxonomic changes are proposed. The ginkgoalean affinities of “Phoenicopsis” elongatus seem more remote than ever, so it is transferred to the non-committal genus Desmiophyllum. A re-organization of palaeophyllalean form-genera and of the species of Ginkgophylopsis is proposed to include remains formerly referred to Chiropteris. Glosso-pteridalean affinities are suggested for the redefined species of Linguifolium and their likely seeds, Carpolithus mackayi. The following new combinations are proposed: Desmiophyllum elongatum (Morris), Ginkgophytopsis cuneala (Carruthers), G. lacerata (Arber), G. tasmanica (Walkom), and Linguifolium temson-woodsii (Etheridge). Dwelling burrows (Macanopsis erewhonensis sp. nov.) found in coastal lagoonal deposits in Tank Gully are ornamented with several types of scratch marks suggesting that they were inhabited by natantid crustaceans.
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