Chris Mays
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View article: Field-of-view subsampling: A novel ‘exotic marker’ method for absolute abundances, validated by simulation and microfossil case studies
Field-of-view subsampling: A novel ‘exotic marker’ method for absolute abundances, validated by simulation and microfossil case studies Open
Key parameters of biological systems—e.g., productivity, population sizes, biomass—are best expressed as absolute values. Exotic markers (e.g., Lycopodium spores introduced into microfossil populations) have long been used to estimate popu…
View article: Measures of deep-time terrestrial net ecosystem productivity and carbon sink function
Measures of deep-time terrestrial net ecosystem productivity and carbon sink function Open
Indicators of past biological productivity, or ‘palaeoproductivity proxies’, offer ways to indirectly measure Earth’s deep-time ecosystem and carbon cycle functioning. Given that plants have been the principal primary producers on land for…
View article: Comprehensive survey of Early to Middle Triassic Gondwanan floras reveals under-representation of plant–arthropod interactions
Comprehensive survey of Early to Middle Triassic Gondwanan floras reveals under-representation of plant–arthropod interactions Open
Plants and arthropods are primary drivers of terrestrial ecosystem function. Trace fossils of plant–arthropod interactions (PAIs) provide a unique window into assessing terrestrial ecosystem states through geological time and evaluating ch…
View article: Improved absolute abundance estimates from spatial count data with simulation and microfossil case studies
Improved absolute abundance estimates from spatial count data with simulation and microfossil case studies Open
Many fundamental parameters of biological systems -- eg. productivity, population sizes and biomass -- are most effectively expressed in absolute terms. In contrast to proportional data (eg. percentages), absolute values provide standardis…
View article: A multidisciplinary approach to resolving the end-Guadalupian extinction
A multidisciplinary approach to resolving the end-Guadalupian extinction Open
The transition from the middle to late Permian (Guadalupian–Lopingian) is claimed to record one or more extinction events that rival the ‘Big Five’ in terms of depletion of biological diversity and reorganization of ecosystem structure. Ye…
View article: END-PERMIAN BURNOUT: THE ROLE OF PERMIAN–TRIASSIC WILDFIRES IN EXTINCTION, CARBON CYCLING, AND ENVIRONMENTAL CHANGE IN EASTERN GONDWANA
END-PERMIAN BURNOUT: THE ROLE OF PERMIAN–TRIASSIC WILDFIRES IN EXTINCTION, CARBON CYCLING, AND ENVIRONMENTAL CHANGE IN EASTERN GONDWANA Open
Wildfire has been implicated as a potential driver of deforestation and continental biodiversity loss during the end-Permian extinction event (EPE; ∼ 252 Ma). However, it cannot be established whether wildfire activity was anomalous during…
View article: Environmental change in the late Permian of Queensland, NE Australia: The warmup to the end-Permian Extinction
Environmental change in the late Permian of Queensland, NE Australia: The warmup to the end-Permian Extinction Open
View article: Synchrotron X-ray imaging reveals the three-dimensional architecture of beetle borings (Dekosichnus meniscatus) in Middle–Late Jurassic araucarian conifer wood from Argentina
Synchrotron X-ray imaging reveals the three-dimensional architecture of beetle borings (Dekosichnus meniscatus) in Middle–Late Jurassic araucarian conifer wood from Argentina Open
Longitudinally aligned borings attributed to the ichnotaxon Dekosichnus meniscatus in the inner secondary wood of a silicified Middle–Late Jurassic conifer from Argentina contain finely granular frass particles arranged in meniscoid lamina…
View article: Lethal microbial blooms delayed freshwater ecosystem recovery following the end-Permian extinction
Lethal microbial blooms delayed freshwater ecosystem recovery following the end-Permian extinction Open
View article: Neutron tomography, fluorescence and transmitted light microscopy reveal new insect damage, fungi and plant organ associations in the Late Cretaceous floras of Sweden
Neutron tomography, fluorescence and transmitted light microscopy reveal new insect damage, fungi and plant organ associations in the Late Cretaceous floras of Sweden Open
Neutron tomographic reconstructions, macrophotography, transmitted light microscopy and fluorescence microscopy are employed to assess the quality of organic preservation, determine organ associations,identify insect damage, and document f…
View article: Pace, magnitude, and nature of terrestrial climate change through the end-Permian extinction in southeastern Gondwana
Pace, magnitude, and nature of terrestrial climate change through the end-Permian extinction in southeastern Gondwana Open
Rapid climate change was a major contributor to the end-Permian extinction (EPE). Although well constrained for the marine realm, relatively few records document the pace, nature, and magnitude of climate change across the EPE in terrestri…
View article: Frontmatter
Frontmatter Open
The RSA Series in Transdisciplinary Rhetoric is a collaboration with the Rhetoric Society of America to publish innovative and rigorously argued scholarship on the tremendous
View article: Age and Paleoenvironmental Significance of the Frazer Beach Member—A New Lithostratigraphic Unit Overlying the End-Permian Extinction Horizon in the Sydney Basin, Australia
Age and Paleoenvironmental Significance of the Frazer Beach Member—A New Lithostratigraphic Unit Overlying the End-Permian Extinction Horizon in the Sydney Basin, Australia Open
The newly defined Frazer Beach Member of the Moon Island Beach Formation is identified widely across the Sydney Basin in both outcrop and exploration wells. This thin unit was deposited immediately after extinction of the Glossopteris flor…
View article: Neutron tomography, fluorescence and transmitted light microscopy reveal new insect damage, fungi and plant organ associations in the Late Cretaceous floras of Sweden
Neutron tomography, fluorescence and transmitted light microscopy reveal new insect damage, fungi and plant organ associations in the Late Cretaceous floras of Sweden Open
Neutron tomographic reconstructions, macrophotography, transmitted light microscopy and fluorescence microscopy are employed to assess the quality of organic preservation, determine organ associations, identify insect damage, and document …
View article: Permian–Triassic non-marine algae of Gondwana—Distributions, natural affinities and ecological implications
Permian–Triassic non-marine algae of Gondwana—Distributions, natural affinities and ecological implications Open
View article: Frontmatter
Frontmatter Open
The RSA Series in Transdisciplinary Rhetoric is a collaboration with the Rhetoric Society of America to publish innovative and rigorously argued scholarship on the tremendous disciplinary breadth of rhetoric.Books in the
View article: DWELLING IN THE DEAD ZONE—VERTEBRATE BURROWS IMMEDIATELY SUCCEEDING THE END-PERMIAN EXTINCTION EVENT IN AUSTRALIA
DWELLING IN THE DEAD ZONE—VERTEBRATE BURROWS IMMEDIATELY SUCCEEDING THE END-PERMIAN EXTINCTION EVENT IN AUSTRALIA Open
A distinctive burrow form, Reniformichnus australis n. isp., is described from strata immediately overlying and transecting the end-Permian extinction (EPE) horizon in the Sydney Basin, eastern Australia. Although a unique excavator cannot…
View article: Sedimentology of the continental end‐Permian extinction event in the Sydney Basin, eastern Australia
Sedimentology of the continental end‐Permian extinction event in the Sydney Basin, eastern Australia Open
Upper Permian to Lower Triassic coastal plain successions of the Sydney Basin in eastern Australia have been investigated in outcrop and continuous drillcores. The purpose of the investigation is to provide an assessment of palaeoenvironme…
View article: Frontmatter
Frontmatter Open
The RSA Series in Transdisciplinary Rhetoric is a collaboration with the Rhetoric Society of America to publish innovative and rigorously argued scholarship on the tremendous disciplinary breadth of rhetoric.Books in the series take a vari…
View article: Amber from the Triassic to Paleogene of Australia and New Zealand as exceptional preservation of poorly known terrestrial ecosystems
Amber from the Triassic to Paleogene of Australia and New Zealand as exceptional preservation of poorly known terrestrial ecosystems Open
View article: Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers
Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers Open
Previously unrecognized anatomical features of the cone scales of the enigmatic Early Cretaceous conifer Krassilovia mongolica include the presence of transversely oriented paracytic stomata, which is unusual for all other extinct and exta…
View article: Frontmatter
Frontmatter Open
The RSA Series in Transdisciplinary Rhetoric is a collaboration with the Rhetoric Society of America to publish innovative and rigorously argued scholarship on the tremendous disciplinary breadth of rhetoric.Books in the series take a vari…
View article: Refined Permian–Triassic floristic timeline reveals early collapse and delayed recovery of south polar terrestrial ecosystems
Refined Permian–Triassic floristic timeline reveals early collapse and delayed recovery of south polar terrestrial ecosystems Open
The collapse of late Permian (Lopingian) Gondwanan floras, characterized by the extinction of glossopterid gymnosperms, heralded the end of one of the most enduring and extensive biomes in Earth’s history. The Sydney Basin, Australia, host…
View article: Frontmatter
Frontmatter Open
The RSA Series in Transdisciplinary Rhetoric is a collaboration with the Rhetoric Society of America to publish innovative and rigorously argued scholarship on the tremendous disciplinary breadth of rhetoric.Books in the series take a vari…
View article: End-Permian (252 Mya) deforestation, wildfires and flooding—An ancient biotic crisis with lessons for the present
End-Permian (252 Mya) deforestation, wildfires and flooding—An ancient biotic crisis with lessons for the present Open
Current large-scale deforestation poses a threat to ecosystems globally, and imposes substantial and prolonged changes on the hydrological and carbon cycles. The tropical forests of the Amazon and Indonesia are currently undergoing defores…
View article: A New High-Paleolatitude Late Permian Permineralized Peat Flora from the Sydney Basin, Australia
A New High-Paleolatitude Late Permian Permineralized Peat Flora from the Sydney Basin, Australia Open
Premise of research. Permineralized peats are prized for hosting three-dimensionally preserved plant remains that provide insights into fossil plant anatomy and the composition of coal-forming ecosystems. A new record of siliceous perminer…
View article: Age and pattern of the southern high-latitude continental end-Permian extinction constrained by multiproxy analysis
Age and pattern of the southern high-latitude continental end-Permian extinction constrained by multiproxy analysis Open
View article: Caught between mass extinctions - the rise and fall of Dicroidium
Caught between mass extinctions - the rise and fall of Dicroidium Open
In the aftermath of Earth’s greatest biotic crisis 251.9 million years ago - the end-Permian mass extinction - a group of plants arose that would come to dominate the flora of the Southern Hemisphere. Recovery of the vegetation from the en…
View article: Frontmatter
Frontmatter Open
Rhetoric is a collaboration with the Rhetoric Society of America to publish innovative and rigorously argued scholarship on the tremendous disciplin-
View article: Data for: The botanical provenance of Late Cretaceous amber from the Chatham Islands, New Zealand
Data for: The botanical provenance of Late Cretaceous amber from the Chatham Islands, New Zealand Open
Appendix 4: Principal Component Analysis table and results from Chatham 13C NMR data