Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

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Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

This chart is a modified compilation of the stratigraphy of the offshore basins along Australia's northwestern and northern margins from the Northern Carnarvon Basin in the south to the Carpentaria Basin in the north based on AGSO's previously published Basin Biostratigraphy Charts 1, 3, 7, 11, 14, 15 & 16 (1996 - 1998). The chart shows the stratigraphic position of AGSO's interpreted regional seismic horizons.

2004 updated version of Helby, Morgan & Partridge (1987)

Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

Biostratigraphy is the branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within and between depositional basins. A biozone is an interval of geologic strata characterised by certain fossil taxa. Such intervals are often defined by the first appearances (range bases), apparent extinctions (range tops/last appearances), or abundances of fossil index species. These key index species should be relatively abundant, short-lived taxa that are easy to recognise and as geographically widespread as possible. Widely used fossil groups include brachiopods, conodonts, dinoflagellate cysts, foraminifera, graptolites, nannofossil, spores and pollen and trilobites. Zonal schemes based on several different fossil groups can be used in parallel, and the zones can be calibrated to the absolute geological timescale using tie points to rocks which have been radio-isotopically dated.

Geoscience Australia's Basin Biozonation and Stratigraphy Chart series is a compilation of Australian hydrocarbon-bearing basin charts. Each chart summarises a basin's lithostratigraphy, hydrocarbon shows/discoveries and source rocks, correlating each basin sub-division with the international timescale, relevant biozones and a global sea level curve. Charts available: Arafura and Money Shoal Basins Biozonation and Stratigraphy, 1997, Chart 3 Southern Carnarvon Basin Biozonation and Stratigraphy, 1997, Chart 4 Timor Sea Biozonation and Stratigraphy, 1997, Chart 5 Amadeus Basin Biozonation and Stratigraphy, 2017, Chart 6 North West Shelf Stratigraphic Panorama, 1998, Chart 8 Roebuck and Offshore Canning Basins Biozonation and Stratigraphy, 1998, Chart 14 Carpentaria Basin Biozonation and Stratigraphy, 1998, Chart 16 Bass Basin Biozonation and Stratigraphy, 1998, Chart 17 Cooper and Eromanga Basins Biozonation and Stratigraphy, 1998, Chart 19 Triassic Biozonation and Stratigraphy, 1998, Chart 20 Permian Biozonation and Stratigraphy, 1998, Chart 21 Southern Margin Basins Biozonation and Stratigraphy, 1999, Chart 22 Lord Howe Rise Basin Regional Biozonation and Stratigraphy, 1999, Chart 26 Canning Basin Biozonation and Stratigraphy, 2013, Chart 31 Browse Basin Biozonation and Stratigraphy, 2017, Chart 32 Bonaparte Basin Biozonation and Stratigraphy, 2009, Chart 33 Otway Basin Biozonation and Stratigraphy, 2015, Chart 34 Bight Basin Biozonation and Stratigraphy, 2012, Chart 35 Northern Carnarvon Basin Biozonation and Stratigraphy, 2013, Chart 36 Offshore Northern Perth Basin Biozonation and Stratigraphy, 2013, Chart 38 Onshore Perth Basin Biozonation and Stratigraphy, 2013, Chart 39 Gippsland Basin Biozonation and Stratigraphy, 2013, Chart 40 Georgina Basin Biozonation and Stratigraphy, 2013, Chart 41