Results 51 to 60 of about 43,956 (239)

Suppressed competitive exclusion enabled the proliferation of Permian/Triassic boundary microbialites

open access: yesThe Depositional Record, 2020
During the earliest Triassic microbial mats flourished in the photic zones of marginal seas, generating widespread microbialites. It has been suggested that anoxic conditions in shallow marine environments, linked to the end‐Permian mass extinction ...
William J. Foster   +11 more
doaj   +1 more source

Extent and duration of marine anoxia during the Frasnian– Famennian (Late Devonian) mass extinction in Poland, Germany, Austria and France [PDF]

open access: yes, 2004
– The intensity and extent of anoxia during the two Kellwasser anoxic events has been investigated in a range of European localities using amultidisciplinary approach (pyrite framboid assay, gamma-ray spectrometry and sediment fabric analysis).
Bond, D.P.G., Racki, G., Wignall, P.B.
core   +1 more source

Palaeoecological deductions from osteohistology

open access: yesBiology Letters, 2023
Palaeoecological deductions are vital for understanding the evolution and diversification of species within prehistoric environments. This review highlights the multitude of ways in which the microanatomy and microscopic structure of bones enables palaeoecological deductions. The occurrence of growth marks in bones is discussed, and their usefulness in
openaire   +2 more sources

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

open access: yesThe Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer   +2 more
wiley   +1 more source

Towards a process of translational palaeoecology: A practical guide to research co‐production

open access: yesEcological Solutions and Evidence
Palaeoecology has the potential to support practical conservation, offering a long‐term perspective to issues such as biodiversity loss, environmental restoration and peatland carbon storage.
Jessica Gauld   +30 more
doaj   +1 more source

Complexities of Stable Carbon and Nitrogen Isotope Biogeochemistry in Ancient Freshwater Ecosystems: Implications for the Study of Past Subsistence and Environmental Change

open access: yesFrontiers in Ecology and Evolution, 2019
Stable carbon and nitrogen isotope analyses of human and animal tissues have become an important means of studying both anthropogenic and natural food webs in aquatic ecosystems.
Eric Guiry, Eric Guiry
doaj   +1 more source

CHARACTERISTICS OF THE FACIES AND RADIOLITID PALEOENVIRONMENT OF THE UPPER CENOMANIAN SHALLOW-WATER SUCCESSION FROM THE SOUTHERN PART OF THE ADRIATIC CARBONATE PLATFORM, NORTHWESTERN SIDE OF KORČULA ISLAND, CROATIA

open access: yesRudarsko-geološko-naftni Zbornik, 2023
Upper Cenomanian limestones from the northwestern part of the island of Korčula in Croatia are shallow-water Chondrodonta-level deposits that represent a lateral equivalent of a foundered platform paleoenvironment.
Alan Moro   +3 more
doaj   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

open access: yesThe Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison   +9 more
wiley   +1 more source

Trace fossils associated with Burgess Shale non-biomineralized carapaces: bringing taphonomic and ecological controls into focus [PDF]

open access: yesRoyal Society Open Science, 2019
The association of trace fossils and non-biomineralized carapaces has been reported from Cambrian Lagerstätten worldwide, but the abundance, ichnodiversity, taphonomy and ecological significance of such associations have yet to be fully investigated. Two
M. Gabriela Mángano   +2 more
doaj   +1 more source

History of oceanic front development in the New Zealand sector of the Southern Ocean during the Cenozoic--a synthesis [PDF]

open access: yes, 2001
The New Zealand sector of the Southern Ocean (NZSSO) has opened about the Indian-Pacific spreading ridge throughout the Cenozoic. Today the NZSSO is characterised by broad zonal belts of antarctic (cold), subantarctic (cool), and subtropical (warm ...
Abelmann A.   +60 more
core   +2 more sources

Home - About - Disclaimer - Privacy