Results 51 to 60 of about 509,485 (382)

Promotion of Paleontological Heritage: Case Histories from Southern Italy

Heritage
The preservation of paleontological heritage is relevant for paleobiological and geological research, as well as for scientific dissemination. Fossils are indicative of the evolutionary processes, biodiversity, ecology, and geography of the past and ...
Antonella Cinzia Marra, Fabrizio Sudano, Anna Rao, Vincenzo Calzona, Adriano Guido   +4 more
doaj   +1 more source

Cretaceous dinosaur bone contains recent organic material and provides an environment conducive to microbial communities

eLife, 2019
Fossils were thought to lack original organic molecules, but chemical analyses show that some can survive. Dinosaur bone has been proposed to preserve collagen, osteocytes, and blood vessels.
Evan T Saitta, Renxing Liang, Maggie CY Lau, Caleb M Brown, Nicholas R Longrich, Thomas G Kaye, Ben J Novak, Steven L Salzberg, Mark A Norell, Geoffrey D Abbott, Marc R Dickinson, Jakob Vinther, Ian D Bull, Richard A Brooker, Peter Martin, Paul Donohoe, Timothy DJ Knowles, Kirsty EH Penkman, Tullis Onstott   +18 more
doaj   +1 more source

Caradiophyodidae, a New Family of Micro-Wasps (Hymenoptera: Platygastroidea) Based on the Description of Caradiophyodus saradae gen. et sp. nov. in Mid-Cretaceous Burmese Amber

Life, 2023
The female micro-wasp in mid-Cretaceous Burmese amber is described as a new genus and species in the extinct family Caradiophyodidae fam. nov. (Hymenoptera: Platygastroidea). Features of the specimen are its small body size (1.3 mm), no elbows, elongated,
George Poinar, Fernando E. Vega
doaj   +1 more source

Assessment of available anatomical characters for linking living mammals to fossil taxa in phylogenetic analyses [PDF]

, 2016
ORCID: 0000-0003-4919-8655© 2016 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and ...
Natalie Cooper, R Core Team, Thomas Guillerme, Wilson DE   +3 more
core   +2 more sources

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Morphological and Molecular Perspectives on the Phylogeny, Evolution, and Classification of Weevils (Coleoptera: Curculionoidea): Proceedings from the 2016 International Weevil Meeting

Diversity, 2018
The 2016 International Weevil Meeting was held immediately after the International Congress of Entomology (ICE). It built on the topics and content of the 2016 ICE weevil symposium Phylogeny and Evolution of Weevils (Coleoptera: Curculionoidea): A ...
Duane D. McKenna, Dave J. Clarke, Robert Anderson, Jonas J. Astrin, Samuel Brown, Lourdes Chamorro, Steven R. Davis, Bruno de Medeiros, M. Guadalupe del Rio, Julien Haran, Guillermo Kuschel, Nico Franz, Bjarte Jordal, Analia Lanteri, Richard A. B. Leschen, Harald Letsch, Chris Lyal, Adriana Marvaldi, Jose Ricardo Mermudes, Rolf G. Oberprieler, André Schütte, Andrea Sequeira, Seunggwan Shin, Matthew H. Van Dam, Guanyang Zhang   +24 more
doaj   +1 more source

Climate Change during Cretaceous/Paleogene as a Driving Force for the Evolutionary Radiation of Physical Dormancy in Fabaceae

Seeds, 2023
Physical dormancy (PY) due to a water-impermeable seed/fruit coat is one of the characteristic features of many species of Fabaceae; however, the timing and context of the evolution of this trait are poorly understood.
Ganesh K. Jaganathan, Keith Berry
doaj   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

A mathematical description of fossilization

Royal Society Open Science
Fossils constitute an inestimable archive of past life on the Earth. However, the stochastic processes driving decay and fossilization and overwhelmingly distorting this archive, are challenging to interpret. Consequently, concepts of exceptional or poor
Corentin C. Loron
doaj   +1 more source

RX J1548.9+0851, a fossil cluster? [PDF]

, 2012
Fossil galaxy groups are spatially extended X-ray sources with X-ray luminosities above L_X,bol > 10^42 h_50^-2 ergs s^-1 and a central elliptical galaxy dominating the optical, the second-brightest galaxy being at least 2 magnitudes fainter in the R ...
Adelman-McCarthy, Barnes, Biviano, Cypriano, Dariush, D’Onghia, Ebrová, Eigenthaler, Eigenthaler, Evrard, Firth, Girardi, Hartley, Hopkins, Horne, Jacoby, Jones, Khosroshahi, Khosroshahi, Khosroshahi, Koleva, Kurtz, Le Borgne, Mendes de Oliveira, Mendes de Oliveira, Miller, Mukai, Navarro, Osmond, P. Eigenthaler, Pierini, Ponman, Proctor, Prugniel, Ramella, Sales, Santos, Schirmer, Sodré, Springel, Sun, Tonry, Ulmer, Vikhlinin, Voges, W. W. Zeilinger, Wu, Yoshioka   +47 more
core   +1 more source