F igjg J Chapman, Geological History of Australian Plants. 155 



logical Survey,* who shows the Berts' s Creek beds (Glossopteris 

 shales and Vertebraria beds) to belong to the Carbopermian, 

 upon which the Desert Sandstone lies unconformably. 



The Burrum beds, with plant remains and associated 

 mollusca-bearing marine deposits, were formerly referred to 

 the Lower Trias- jura. They have now, through the investiga- 

 tions of Mr. B. Dunstan and Dr. H. C. Richards, been 

 established as part of the Cretaceous Series. f Quite lately 

 the flora has been studied by Dr. Walkom, and that gentleman 

 has most kindly placed at my disposal some valuable lists of 

 determined plants from this series, which are not yet published 

 in extenso. The notes by Dr. Walkom are as follows : — 



" The Cretaceous floras, as far as Queensland is concerned, 

 are three in number — viz., (1) a small flora from the Marine 

 Cretaceous in the Maryborough Series, (2) the flora of the 

 Burrum Series, (3) the flora of the Styx River Coal Measures. 



" 1. — The flora of the Maryborough Series (Publ. 262, Queens- 

 land Geological Survey — in the press) consists of some fourteen 

 species, as follows : — Equisetites of. E. rajmahalensis, Sphenopteris, 

 sp., Tceniopteris elongata, sp. nov., T. Tenison-woodsi, Tceni- 

 optevis, sp., Ginkgo digitata, Ginkgo, sp., Ptilophyllum 

 {Williamsonia) pecten, (?) Pterophyllum, sp., Araucarites poly- 

 carpa, A. mesozoica, sp. nov., Araucarites, sp., Pagiophyllum 

 Jennetti, sp. nov., (?) Taxites, sp., (?) Roots. 



" These occur definitely in the marine beds, in some cases 

 fragments of plants occurring in the same specimen as marine 

 shells. The Maryborough Series is regarded as probably the 

 equivalent of the Rolling Downs Series of Western Queensland. 



" 2. — The flora of the Burrum Series has been very in- 

 adequately described in the past. I have just completed the 

 MS. of my description of it, and have described some 35 species, 

 as follows : — Cladophlebis australis, (?) Thinnfeldia lancifolia, 

 (?) Dictyophyllum, sp., Sphenopteris flabellifolia, S. erecta, S. 

 burrumensis, sp. nov., (?) Chiropteris, sp., Phyllopteris lanceolata, 

 sp. nov., P. expansa, sp. nov., Microphyllopteris gleichenoides, 

 M. acuta, sp. nov., Stenopteris elongata, S. laxum, Ptilophyllum 

 pecten, Zamites takurcensis, sp. nov., Nilssonia Schaumbergensis, 

 N. mucronatum, Otozamites, sp., Tceniopteris spatulata, T. 

 Howardensis, sp. nov., Ginkgo digitata, Baiera bidens, Arau- 

 carites polycarpa, Araucarites (scales), Brachyphyllum crassum, 

 Elatocladus planus, (?) Elatocladus, sp., Nageiopsis (?) zamioides, 

 Pagiophyllum Jennetti, P. (?) peregrinum, (?) Sphenolepidium, 

 sp., Podozamites Kidstoni, P. lanceolatus, Podozamites, sp. 



* Publ. No. 254, Geol. Surv. Queensland, 1916. 



f " The Cretaceous Rocks of Woody Island, Queensland, and its Neigh- 

 bourhood, and their Relations to the Burrum Formation." Rep. Aust. 

 Assoc. Adv. Sci., Melb. Meeting, vol. xiv. (1913), 1914, pp. 179-188. 



