The Great Artesian Basin Party of the Bureau of Mineral Resources mapped the Julia Creek Sheet in 1961 as part of a programme of regional mapping covering the margins of the Eromanga Sub-Basin in Western Queensland. The Julia Creek area forms the western and northern margins of the Eromanga Sub-Basin, where it is mainly composed of Cretaceous rocks overlying a shallow, crystalline basement. Small outcrops of Precambrian granite and metamorphics occur in the south-west. Thin veneers of Cainozoic sand and gravel, and recent alluvium mask large areas of the Cretaceous rocks.

Lower Cretaceous strata of the Roper River and the Urapunga 1:250,000 Sheets were examined during the 1960 and 1961 field seasons. Field observations on lithology and palaeogeography were summarised in previous Records (Skwarko,1961a,b), and these, together with the identification of the fossils collected and their dating has provided material for this Record. Fossils were collected at only three localities on the Roper River 1:250,000 Sheet area, the greater portion of which is at present covered by the sea, and it has been found convenient to discuss these two sheets under a common title.

This Fossils booklet will take you through concepts of geological time and fossilisation. It also provides fact sheets on important animals and plants in the fossil record. Each fact sheet contains a description of the organism to aid in identification, information on when, where and how the organism lived as well as interesting facts to grab your students' attention. Students activities are also included.

Lower Cretaceous strata of the Katherine and the Fergusson River 1:250,000 Sheets were examined during the 1960 and 1961 field seasons. Field observations on lithology and palaeogeography were summarised in previous Records (Skwarko,1961a,b) and these, together with the identification of the fossils collected and their dating have provided material for conclusions expressed in the present Record. Of the thirteen assemblages of fossils collected on the Katherine-Ferguson River area, nine are marine and four consist of plant remains. They appear to range in age from Neocomian to uppermost Albian. Lower Cretaceous sediments.

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