Bisaccate sporomorphs from Australian Permian coals

Abstract

The structure and distribution of bisaccate microspores isolated from coals and shales of the Australian Permian are discussed. Microspores assigned here to the sporotypes Lueckisporites Potonie & Klaus, Alisporites Daugherty, Florinites Schopf, Wilson, & Sentail, and Pityosporites Seward have been described and a number of new sporomorphs designated. Vestigisporites n. spt. is instituted as a new sporotype.

Comparisons are made between Australian Palaeozoic bisaccate forms and similar types from approximately contemporaneous deposits in other parts of the world, and the possible affinities of early two-bladdered microspores discussed.