56 GEOLOGY OF LOWER MESOZOIC ROCKS OF QUEENSLAND, 



Plates 3, 5, and 9 of the Queensland Mineral Index. On Plate 

 1 1 of the same work, a small patch is shown as belonging to the 

 Walloon Series, just west of Anakie. Mr. Dunstan, who in- 

 vestigated the Anakie district some years ago, kindly informed 

 me tliat tliere is no representative of the AYalloon Series in that 

 district, and that the colouring of this area as Walloon was due 

 to an error in lithographing. Another area, to M'hich attention 

 should be called, is that of the Styx River, marked on Plate 3 

 of the Mineral Index as belonging to the Ipswicli Series. Mr. 

 Dunstan now believes this to be of Cretaceous age, and has 

 recently obtained, from the Styx River Coal -Measures, a frag- 

 ment which appears to be a dicotyledonous leaf. This is an 

 interesting find, and the greatest age, which can reasonably be 

 assigned to these Measures in view of it, is Cretaceous. 



In the case of most of the isolated occurrences of the Walloon 

 Series just mentioned, there is sufficient evidence to render it 

 almost certain that the determination of' the age is correct. The 

 evidence is here summarised : — 



In the Westwood-Wycarbah-Stanwell district, the fossil Hora 

 is distinctly of the Walloon type {infra^ Table vii.). At Water- 

 park, the coal is of Walloon type, but there appears to be no 

 record of fossils. The areas in the vicinities of Brovinia, Mun- 

 dubbera, Burnett River, Barambah Creek, and Mondure are all 

 residuals, occupying rather higher ground, and Mr. Dunstan is 

 of opinion that they undoubtedly represent outliers of the exten- 

 sive outcrop a little to the south-west. In the Laura coalfield, 

 the strata consist of arenaceous beds, with occasional thin beds 

 of shale and coal-seams. Mr. Ball records the finding of the 

 following fossils : Fhyllotheca(i), Tte'itioj)teris, Alethopteris, Bra- 

 chyphyllunn^ and Taxitesi^.). The presence of BrachyphyUiim a,i[\(\ 

 TaxUes(l) is sufficient to indicate a Walloon age. In the remain- 

 ing area, Callide Creek, there is no definite indication of age; 

 the fossils, Thinnfeldia odonlopteroides [ = T. FeislmaiUeli], and 

 Tceniojjteriti sp., have been recorded, but they are not sufficient 

 to determine the age. In view, however, of the wide distribu- 

 tion of strata of V\ alloon age, the Callide Creek beds are re- 

 garded as probably of similar age. 



