A new morphologically distinct species of cowry (family Cypraeidae Rafinesque, 1815) is described from the Pliocene of Flinders Island, Tasmania. sp. nov. differs morphologically from other members of the genus and is particularly characterised by the development of a heavily callused labral margin, with a distinct marginal edge that bends up towards the dorsum centrally. This feature is unique within the genus. The new taxon is only the second known from the Pliocene. A revised key to the known fossil species is presented.
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http://dx.doi.org/10.3897/zookeys.1123.90917 | DOI Listing |
Heredity (Edinb)
September 2024
Molecular Ecology Laboratory, College of Science and Engineering, Flinders University, Adelaide, SA, 5001, Australia.
Anthropogenic climate change is forecast to drive regional climate disruption and instability across the globe. These impacts are likely to be exacerbated within biodiversity hotspots, both due to the greater potential for species loss but also to the possibility that endemic lineages might not have experienced significant climatic variation in the past, limiting their evolutionary potential to respond to rapid climate change. We assessed the role of climatic stability on the accumulation and persistence of lineages in an obligate freshwater fish group endemic to the southwest Western Australia (SWWA) biodiversity hotspot.
View Article and Find Full Text PDFTree-kangaroos of the genus Dendrolagus occupy forest habitats of New Guinea and extreme northeastern Australia, but their evolutionary history is poorly known. Descriptions in the 2000s of near-complete Pleistocene skeletons belonging to larger-bodied species in the now-extinct genus Bohra broadened our understanding of morphological variation in the group and have since helped us to identify unassigned fossils in museum collections, as well as to reassign species previously placed in other genera. Here we describe these fossils and analyse tree-kangaroo systematics via comparative osteology.
View Article and Find Full Text PDFR Soc Open Sci
May 2023
College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia.
Diprotodontids were the largest marsupials to exist and an integral part of Australian terrestrial ecosystems until the last members of the group became extinct approximately 40 000 years ago. Despite the frequency with which diprotodontid remains are encountered, key aspects of their morphology, systematics, ecology and evolutionary history remain poorly understood. Here we describe new skeletal remains of the Pliocene taxon from northern South Australia.
View Article and Find Full Text PDFGeobiology
September 2023
UWA-School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.
Dolomite (CaMg(CO ) ) precipitation is kinetically inhibited at surface temperatures and pressures. Experimental studies have demonstrated that microbial extracellular polymeric substances (EPS) as well as certain clay minerals may catalyse dolomite precipitation. However, the combined association of EPS with clay minerals and dolomite and their occurrence in the natural environment are not well documented.
View Article and Find Full Text PDFZookeys
October 2022
Australian Centre for Pacific Islands Research, University of the Sunshine Coast, Maroochydore, Queensland 4558, Australia.
A new morphologically distinct species of cowry (family Cypraeidae Rafinesque, 1815) is described from the Pliocene of Flinders Island, Tasmania. sp. nov.
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