Results 41 to 50 of about 10,567 (282)

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková, Michiel van Dijk, Robert M'Barek, Hans van Meijl, Tomas Ratinger   +4 more
wiley   +1 more source

A New Jurassic Kempynine Species With Notes on Historical Distributions of Kempyninae Integrated Both Fossil and Extant Taxa (Neuroptera: Osmylidae)

Frontiers in Ecology and Evolution, 2022
The extant kempynines, a strict “southern group,” are confined to South America and Australia, while their most fossil relatives are abundantly recorded in the Northern Hemisphere.
Yiming Ma, Yiming Ma, Chungkun Shih, Chungkun Shih, Dong Ren, Yongjie Wang   +5 more
doaj   +1 more source

Fossil record of stem groups employed in evaluating the chronogram of insects (Arthropoda: Hexapoda) [PDF]

, 2016
Insecta s. str. (=Ectognatha), comprise the largest and most diversified group of living organisms, accounting for roughly half of the biodiversity on Earth.
Xie, Qiang, Engel, Michael S., Yan-hui Wang, Rédei, Dávid, Bu, Wenjun, Rafael, José A., Wu, Haoyang, Rafael, José Albertino, Wang, Gang, Liu, Xiaoguang, Xiao-guang Liu, Wang, Yanhui, Dávid Rédei, Wen-jun Bu, Michael S. Engel, Qiang Xie, Gang Wang, Hao-yang Wu, José A. Rafael   +18 more
core   +1 more source

Fossil insects from the Eocene of Texas [PDF]

American Journal of Science, 1923
xBio:D Automated ...
openaire   +1 more source

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

The Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Sydney Basin in the Triassic—A review of the geology, flora and fauna, and ecosystems. The Hawkesbury Sandstone

Records of the Australian Museum
The Australian Museum has a large palaeontological collection of Triassic specimens from the Sydney Basin, including many type specimens. This study reviewed every presently described Sydney Basin Hawkesbury Sandstone plant and animal taxon that has ...
Graham McLean
doaj   +1 more source

Evidence for social parasitism of early insect societies by Cretaceous rove beetles

Nature Communications, 2016
Social insects are commonly parasitized by beetles that live inside colonies and consume nest resources or even the brood. Here, Yamamotoet al. present fossil evidence that social parasitism by beetles dates back at least 99 million years—contemporaneous
Shûhei Yamamoto, Munetoshi Maruyama, Joseph Parker   +2 more
doaj   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

The Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen, Ivo Jacobs, Kristina Kverková, Lona Lalić, Alexandra Polonyiová, Patrik Stehlík, Stephan A. Reber, Mathias Osvath   +7 more
wiley   +1 more source

The first stage of the evolution of Rhabdomastix (Diptera, Limoniidae) and the taxonomic implications of genus

The European Zoological Journal, 2021
A new subgenus Myanmamastix subgen. n. and four new species of Rhabdomastix from Cenomanian Burmese amber were described: Rhabdomastix (Myanmamastix) asiatica subgen. and sp. n., Rhabdomastix (Myanmamastix) cretacica subgen. and sp.
I. Kania-Kłosok, W. Jordan-Stasiło, K. Kopeć, K. Janiszewska, W. Krzemiński   +4 more
doaj   +1 more source

Taphonomy of pigmentary colours in fossil insects

, 2020
Extant insects are renowned for the striking colouration displayed in their cuticles. Although fossil insects are abundant and the patternings in their cuticles highly resemble those found in extant insects, these are commonly monotonal, especially in ...
Álvarez Armada, Nidia
core