| SILURIAN | Upper.--(Yeringian stage).--Lilydale, | | Loyola, Thomson | | River, and Waratah | | Bay, Vict.; Bowning and | | Yass (in part), N.S. | | Wales; Queensland. | | Lower (Melbournian | | stage).--Melbourne, | | Heathcote, Vict.; Bowning | | and Yass (in part), | | N.S. Wales. Gordon R. | | Limestone. | ORDOVICIAN, | Slates (graptolitic).--Victoria | UPPER and | and New South | LOWER | Wales. (?) Gordon River | | Limestone, Tas., in part | | (Note 4). Larapintine | | series of Central Australia. | CAMBRIAN | Mudstones and limestones | | of Tasmania, | | South Australia, Victoria | | and W. Australia. | PRE-CAMBRIAN | Fossiliferous rocks doubtful; | | chiefly represented | | by schistose and other | | metamorphic rocks. 1.--The classification of the Cainozoics as employed here is virtually the same as given by McCoy in connection with his work for the Victorian Geological Survey. The writer has obtained further evidence to support these conclusions from special studies in the groups of the cetacea, mollusca and the protozoa. The alternative classification of the cainozoics as given by one or two later authors, introducing the useful local terminology of Hall and Pritchard for the various stages or assises is as follows:-- TATE AND DENNANT. | HALL AND PRITCHARD. Stages. | Stages. | Werrikooian Pleistocene | Werrikooian Pliocene. Pliocene | | Kalimnan Miocene | Kalimnan Miocene. | Janjukian (?) Oligocene | Balcombian Eocene. | Balcombian Eocene | Janjukian | and Aldingan Eocene | Aldingan Eocene. (lower beds | in part at that loc.) | 2.--Or Permo-carboniferous. As the series is held by some authorities to partake of the faunas of both epochs, it is preferable to use the shorter word, which moreover gives the natural sequence. There is, however, strong evidence in favour of using the term Permian for this important series.