Results 71 to 80 of about 22,106 (292)

Microbes in Resinous Habitats: A Compilation from Modern and Fossil Resins

open access: yes, 2010
Amber can be considered as a window into the past allowing insights into the palaeoecology of Mesozoic and Cenozoic woodlands. Insects, spiders, fragments of higher plants and even small vertebrates were trapped by resins of conifers and angiosperms of the ancient “amber forests”.
Beimforde, Christina   +4 more
openaire   +2 more sources

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

open access: yesThe Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano   +3 more
wiley   +1 more source

Improved electrical properties, hydrophobicity, and degradability of ortho-vanillin-based epoxy resin: Roles of Schiff base

open access: yesPolymer Testing
Conventional diglycidyl ether of bisphenol A epoxy resins (DGEBA) are made from non-renewable fossil resources, which caused severe resource waste and environmental issues.
Xiao Peng   +6 more
doaj   +1 more source

First record of Jacobsoniidae (Coleoptera) on the African continent in Holocene copal from Tanzania: biogeography since the Cretaceous

open access: yesScientific Reports, 2023
Neither fossil nor living Jacobsoniidae are found in abundance. Derolathrus cavernicolus Peck, 2010 is recorded here preserved in Holocene copal from Tanzania with an age of 210 ± 30 BP years.
David Peris   +3 more
doaj   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

open access: yesThe Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza   +3 more
wiley   +1 more source

X-ray based tree ring analyses [PDF]

open access: yes, 2004
In this thesis, two x-ray based dendro-analyses (batch-wise microdensitometry and energy dispersive x-ray fluorescence (EDXRF)) and the conditions under which these methods could be used on the two typical boreal conifers Norway spruce (Picea abies (L ...
Lindeberg, Johan
core  

Fossilization History of Fossil Resin from Jambi Province (Sumatra, Indonesia) Based on Physico-Chemical Studies [PDF]

open access: yesMinerals, 2018
A unique specimen of fossil resin originating from the Dipterocarpaceae tree family found in Miocene brown coal deposits in Jambi Province (Sumatra, Indonesia) was investigated via microscopic observations, microhardness testing and infrared and Raman spectroscopic methods.
Beata Naglik   +9 more
openaire   +1 more source

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

Research experience from the use of different additives in wood-fuel pellet production [PDF]

open access: yes, 2017
The use of wood-fuel pellets has increased significantly worldwide in recent years, especially in the United Kingdom. If wood-fuel pellets should continue to be a successful biofuel at the energy market, the pellet production industry has to reduce the ...
Berghel, J., Frodeson, S., Stahl, M.
core   +1 more source

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy