Proceedings of the Royal Society of Queensland . um Jemmetti Araucariles polycarpa Pagiophyllum peregrinum (?) Araucarites Arberi, sp. nov. iSphenolepidium -sp. Brachypiiyllum crassum Podozamites Kidstoni Elatodadus planut Podozamites lanceolatue lElatodddus sp Podozamites sp. Nilssonia mucronatum occurs in Western Queenslandin the Winton Series which is regarded as the equivalentof the Burrum Series, so it should perhaps be included inthe above list. BY A. B. WALKOM 17 The general proportions of the various groups and theaffinities of the majority of the species in this flora pointto its bein
Proceedings of the Royal Society of Queensland . um Jemmetti Araucariles polycarpa Pagiophyllum peregrinum (?) Araucarites Arberi, sp. nov. iSphenolepidium -sp. Brachypiiyllum crassum Podozamites Kidstoni Elatodadus planut Podozamites lanceolatue lElatodddus sp Podozamites sp. Nilssonia mucronatum occurs in Western Queenslandin the Winton Series which is regarded as the equivalentof the Burrum Series, so it should perhaps be included inthe above list. BY A. B. WALKOM 17 The general proportions of the various groups and theaffinities of the majority of the species in this flora pointto its being of Lower Cretaceous age. It agrees in greatestdetail in this respect with the American Kootanie andPatuxent floras and with the German Wealden flora, andwe have little hesitation in pronouncing it a typical LowerCretaceous flora equivalent to the Xeocomian-Barremianor Wealden stages. If the fossil plants can be relied upon in fixing the ageof the Burrum Series—and I believe they can—animportant question is raised concerning the age of the. Fig. 5—Map showing approximately the distribution of floras of LowerCretaceous Age. (Mainly after E. W. Berry). Maryborough and Rolling Downs Series. The RollingDowns Series has generally been regarded as LowerCretaceous in age, but palaeontologists appear to havebeen loth to refer it definitely to Upper Jurassic or LowerCretaceous in spite of the fact that an extensive invertebratefauna had been described. If we are correct in placing B 18 QUEENSLAND FOSSIL FLORAS the Burrum Series at the base of the Cretaceous, then theRolling Downs Series would he Upper Jurassic. A criticalrevision of the fauna of the latter would help in the solutionof this problem. This affords an excellent example of the advance inthe study of fossil plants during recent years, and showsthat they must now be ranked as of considerable importancein determining geological horizons. (iii) The flora of the Styx Series. From the StyxSeries a collection of fossil plant
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