BY A. B. WALKOM 15 
presence of coniferous remains other than silicified wood, 
in the form of vegetative shoots and portions of cones. 
There is no doubt that the age of this flora is Lower 
Jurassic ; it shows a general agreement with typical floras 
of that age in various parts of the world, particularly as 
regards the type of plant present and also in the percentage 
representation of the various plant groups. 
Floras of Lower and Middle Jurassic age are of world- 
wide distribution and they form the subject of a voluminous 
literature. A prominent feature is the very widespread 
occurrence of certain specific types and a general uniformity 
in the characters of these floras in regions which are subject 
to very different climatic conditions to-day. The 
approximate distribution of Jurassic floras is shown in 
figure 4. 
(e) The Cretaceous floras. These are represented by 
plants from three Series of different ages, viz. :—the 
Maryborough Series, the Burrum Series and the Styx Series. 
The two latter are in all probability both of Lower 
Cretaceous age, but there is a distinct possibility that the 
Maryborough Series may be of Upper Jurassic age since the 
Burrum flora undoubtedly belongs to the lowest portion 
of the Cretaceous. This point is further discussed with 
the Burrum flora (see below, p. 17). 
(i) The flora of the Maryborough Series. This series 
is of marine origin, and contains abundant marine fossils. 
Associated with these, however, a number of plant remains 
have been found. Although the number of actual speci- 
mens of the plants is small, we are particularly fortunate 
in that they show a considerable range of forms, the thirty- 
four specimens in the collection representing the following 
fourteen species :— 
Equisetites cf. rajymahalensis Ptilophylium (Williamsoniay pecten 
Sphenopteris sp. Pterophyllum sp. 
Teniopteris elongata Araucarites polycarpa 
Temopteris Tenison-Woodsi Araucarites mesozoica 
Teniopteris sp. Araucarites sp. 
Ginkgo digitata Pagiophyllum Jemmetti 
Ginkgo sp. ? Elatocladus. sp. 
