Old brains, new data - early evolution of structural complexity in the vertebrate head. Of the all the complex structures biology has provided, the evolution of the vertebrate brain and its sensory organs is perhaps the most enigmatic. The fossil record occasionally provides a chance to trace this evolution, but only with the use of novel X-ray scanning techniques can these secrets be detailed in three dimensions. Exploiting the exceptional fossil record from Australia and China, this team will ....Old brains, new data - early evolution of structural complexity in the vertebrate head. Of the all the complex structures biology has provided, the evolution of the vertebrate brain and its sensory organs is perhaps the most enigmatic. The fossil record occasionally provides a chance to trace this evolution, but only with the use of novel X-ray scanning techniques can these secrets be detailed in three dimensions. Exploiting the exceptional fossil record from Australia and China, this team will for the first time collect a vast comparative data base which will yield clues on the early evolution of the ear, eye and brain. Read moreRead less
Overturning the Ediacara biota: community structure of the oldest animal ecosystems. The first systematic excavation of serial fossil beds of South Australia's famous Ediacara biota will lead to an integrated study of the oldest diverse macroscopic assemblages of life on Earth. Once the preservational and biological components of the record have been separated, Ediacaran fossil beds can be treated as 'snap-shots? of benthic marine communities. This will enable the use of palaeoecological tools t ....Overturning the Ediacara biota: community structure of the oldest animal ecosystems. The first systematic excavation of serial fossil beds of South Australia's famous Ediacara biota will lead to an integrated study of the oldest diverse macroscopic assemblages of life on Earth. Once the preservational and biological components of the record have been separated, Ediacaran fossil beds can be treated as 'snap-shots? of benthic marine communities. This will enable the use of palaeoecological tools to determine which if any of these Precambrian fossils were members of animal groups that heralded the Cambrian explosion of animal life.Read moreRead less
Origin of jaws - the greatest unsolved mystery of early vertebrate evolution. The 2008 discovery of an unborn embryo in the 380 million-year-old "Mother Fish" from the famous Gogo fossil deposit in NW Australia has attracted a collaboration of Australian, American and Chinese scientists to a new international collaboration. The team will study spectacular new fossils from central Australia and southern China, the oldest known back-boned animals with jaws and a hard skeleton. Innovative 3D X-ray ....Origin of jaws - the greatest unsolved mystery of early vertebrate evolution. The 2008 discovery of an unborn embryo in the 380 million-year-old "Mother Fish" from the famous Gogo fossil deposit in NW Australia has attracted a collaboration of Australian, American and Chinese scientists to a new international collaboration. The team will study spectacular new fossils from central Australia and southern China, the oldest known back-boned animals with jaws and a hard skeleton. Innovative 3D X-ray computer tomography, and the Australian synchrotron, will be used to investigate ancient cells and preserved soft tissue structures, to search for evidence that copulation and internal fertilization, as in modern mammals, might have originated when jaws first evolved. Read moreRead less
Extinction and survival: biotic responses to environmental change in Late Devonian oceans during a greenhouse-icehouse transition. This project represents an important opportunity to answer fundamental questions about the role of environmental changes in major mass extinction events in the geological past and to provide insight into the survival of modern marine species in response to climate change (National Research Priority 1). It will enhance Australia's global research profile in biostratig ....Extinction and survival: biotic responses to environmental change in Late Devonian oceans during a greenhouse-icehouse transition. This project represents an important opportunity to answer fundamental questions about the role of environmental changes in major mass extinction events in the geological past and to provide insight into the survival of modern marine species in response to climate change (National Research Priority 1). It will enhance Australia's global research profile in biostratigraphical and palaeontological research through contribution to the development of biozonations, correlation and global debate on extinction mechanisms. It will also strengthen international collaboration, and, importantly, provide crucial research training to young researchers in these fields.Read moreRead less
Australia's exceptional Palaeozoic fossil fishes, and a Gondwana origin for land vertebrates. The 370 million-year-old Gogo deposit in WA has produced the World's best-preserved fossil fishes of Devonian age. New discoveries of related forms in eastern and central Australia document the deep history of Australia's unique vertebrate fauna, and provide new evidence on the evolution of the first jaws and limbs in vertebrates. They indicate that the first land animals may have evolved on the Austral ....Australia's exceptional Palaeozoic fossil fishes, and a Gondwana origin for land vertebrates. The 370 million-year-old Gogo deposit in WA has produced the World's best-preserved fossil fishes of Devonian age. New discoveries of related forms in eastern and central Australia document the deep history of Australia's unique vertebrate fauna, and provide new evidence on the evolution of the first jaws and limbs in vertebrates. They indicate that the first land animals may have evolved on the Australian landmass. These remarkably preserved, information-rich skulls and braincases of some of the oldest known vertebrate fossils provide unique data on early evolution of the head and brain; they are held in national collections as a significant contribution to both National and World Heritage.Read moreRead less
Mid-Holocene coral reef bleaching and recovery in the South China Sea and its implications for the modern Great Barrier Reef. Strong evidence shows the mid-Holocene was 1-2 ºC warmer than the present, implying a greater probability for coral bleaching. We have collected well-preserved mid-Holocene reef corals from the northern South China Sea, which contain growth hiatuses reflecting bleaching and mortality. We propose to use high-resolution Sr/Ca, d18O and microstructure analysis and high-preci ....Mid-Holocene coral reef bleaching and recovery in the South China Sea and its implications for the modern Great Barrier Reef. Strong evidence shows the mid-Holocene was 1-2 ºC warmer than the present, implying a greater probability for coral bleaching. We have collected well-preserved mid-Holocene reef corals from the northern South China Sea, which contain growth hiatuses reflecting bleaching and mortality. We propose to use high-resolution Sr/Ca, d18O and microstructure analysis and high-precision U-series dating of coral growth bands to determine the season and sea-surface temperature when each growth hiatus occurred and to establish the timing and duration of the growth hiatus. Reconstructed mid-Holocene coral bleaching history has important implications for management of the Great Barrier Reef during predicted global warming.Read moreRead less