Search Results - "Brasier, Martin D"

Changing the picture of Earth's earliest fossils (3.5–1.9 Ga) with new approaches and new discoveries by Brasier, Martin D., Antcliffe, Jonathan, Saunders, Martin, Wacey, David

“…New analytical approaches and discoveries are demanding fresh thinking about the early fossil record. The 1.88-Ga Gunflint chert provides an important…”
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Giving the early fossil record of sponges a squeeze by Antcliffe, Jonathan B., Callow, Richard H. T., Brasier, Martin D.

“…ABSTRACT Twenty candidate fossils with claim to be the oldest representative of the Phylum Porifera have been re‐analysed. Three criteria are used to assess…”
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A possible billion-year-old holozoan with differentiated multicellularity by Strother, Paul K., Brasier, Martin D., Wacey, David, Timpe, Leslie, Saunders, Martin, Wellman, Charles H.

“…Sediments of the Torridonian sequence of the Northwest Scottish Highlands contain a wide array of microfossils, documenting life in a non-marine setting a…”
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Enhanced cellular preservation by clay minerals in 1 billion-year-old lakes by Wacey, David, Saunders, Martin, Roberts, Malcolm, Menon, Sarath, Green, Leonard, Kong, Charlie, Culwick, Timothy, Strother, Paul, Brasier, Martin D.

“…Organic-walled microfossils provide the best insights into the composition and evolution of the biosphere through the first 80 percent of Earth history. The…”
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The dynamic influence of microbial mats on sediments; fluid escape and pseudofossil formation in the Ediacaran Longmyndian Supergroup, UK by Menon, Latha R, McIlroy, Duncan, Liu, Alexander G, Brasier, Martin D

“…Microbial mats are thought to have been widespread in marine settings before the advent of bioturbation, and the range of their influence on sediments is…”
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Nanoscale analysis of pyritized microfossils reveals differential heterotrophic consumption in the ∼1.9-Ga Gunflint chert by Wacey, David, McLoughlin, Nicola, Kilburn, Matt R., Saunders, Martin, Cliff, John B., Kong, Charlie, Barley, Mark E., Brasier, Martin D.

“…The 1.88-Ga Gunflint biota is one of the most famous Precambrian microfossil lagerstätten and provides a key record of the biosphere at a time of changing…”
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Cambrian Evolutionary Radiation: Context, correlation, and chronostratigraphy—Overcoming deficiencies of the first appearance datum (FAD) concept by Landing, Ed, Geyer, Gerd, Brasier, Martin D., Bowring, Samuel A.

“…Use of the first appearance datum (FAD) of a fossil to define a global chronostratigraphic unit's base can lead to intractable correlation and stability…”
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On biogenicity criteria for endolithic microborings on early Earth and beyond by McLoughlin, Nicola, Brasier, Martin D, Wacey, David, Green, Owen R, Perry, Randall S

“…Micron-sized cavities created by the actions of rock-etching microorganisms known as euendoliths are explored as a biosignature for life on early Earth and…”
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Smothering of microbial mats by macrobiota; implications for the Ediacara biota by McIlroy, Duncan, Braxier, Martin D, Lang, Andrew S

“…Recent advances in understanding the preservation of the soft-bodied Neoproterozoic Ediacara biota have centred upon the role of microbes in casting the…”
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Microfossils of sulphur-metabolizing cells in 3.4-billion-year-old rocks of Western Australia by Wacey, David, Kilburn, Matt R., Saunders, Martin, Cliff, John, Brasier, Martin D.

“…Geochemical evidence suggests that sulphur-metabolizing bacteria were present at least 3.5 billion years ago. Geochemical and petrological analyses of…”
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Did global tectonics drive early biosphere evolution? Carbon isotope record from 2.6 to 1.9 Ga carbonates of Western Australian basins by Lindsay, John F, Brasier, Martin D

“…The δ 13C carb record of well preserved carbonates in outcrop and core is here examined from the 2.6 to 1.9 Ga old basins of Western Australia. These data,…”
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Haootia quadriformis n. gen., n. sp., interpreted as a muscular cnidarian impression from the Late Ediacaran period (approx. 560 Ma) by Liu, Alexander G., Matthews, Jack J., Menon, Latha R., McIlroy, Duncan, Brasier, Martin D.

“…Muscle tissue is a fundamentally eumetazoan attribute. The oldest evidence for fossilized muscular tissue before the Early Cambrian has hitherto remained moot,…”
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Earth’s earliest non-marine eukaryotes by Strother, Paul K., Battison, Leila, Brasier, Martin D., Wellman, Charles H.

“…An early move to fresh water Fossil discoveries in billion-year-old Precambrian shales from the Torridonian of the northwest Scottish Highlands suggest that…”
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Quantitative study of developmental biology confirms Dickinsonia as a metazoan by Hoekzema, Renee S., Brasier, Martin D., Dunn, Frances S., Liu, Alexander G.

“…The late Ediacaran soft-bodied macroorganism Dickinsonia (age range approx. 560–550 Ma) has often been interpreted as an early animal, and is increasingly…”
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Green algae (Chlorophyta) and the question of freshwater symbiogenesis in the early proterozoic by Brasier, Martin D.

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Earliest microbially mediated pyrite oxidation in similar to 3.4 billion-year-old sediments by Wacey, David, Saunders, Martin, Brasier, Martin D, Kilburn, Matt R

“…Pyrite (FeS2) oxidation in modern sedimentary environments is neither a purely chemical nor purely microbial process, but it is significantly enhanced by the…”
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Evolutionary relationships within the Avalonian Ediacara biota; new insights from laser analysis by Brasier, Martin D, Antcliffe, Jonathan B

“…We report new high-resolution laser scanning of the type material for the earliest, complex Ediacaran genera Charnia, Bradgatia, Charniodiscus and Ivesheadia…”
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The architecture of Ediacaran Fronds by BRASIER, MARTIN D., ANTCLIFFE, JONATHAN B., LIU, ALEXANDER G.

“…:  Ongoing discoveries of new rangeomorph fossils from the Ediacaran of Avalonia allow us to put forward a unified and approachable scheme for the description…”
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A new assemblage of juvenile Ediacaran fronds from the Drook Formation, Newfoundland by Liu, Alexander G, McIlroy, Duncan, Matthews, Jack J, Brasier, Martin D

“…A new assemblage of frondose and filamentous Ediacaran macrofossils is reported from the upper Drook Formation of Pigeon Cove, Newfoundland. The frondose…”
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Pumice as a remarkable substrate for the origin of life by Brasier, Martin D, Matthewman, Richard, McMahon, Sean, Wacey, David

“…The context for the emergence of life on Earth sometime prior to 3.5 billion years ago is almost as big a puzzle as the definition of life itself. Hitherto,…”
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