Results 81 to 90 of about 21,213 (294)

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

New techniques for old bones: Morphometric and diffeomorphometric analysis of the bony labyrinth of the Reilingen and Ehringsdorf Neandertals

The Anatomical Record, EarlyView.
Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli, Julia Diez‐Valero, Ignacio Martínez, Rolf Quam, Brian A. Keeling, Nicole M. Webb, Mercedes Conde‐Valverde   +6 more
wiley   +1 more source

Variation in Isotopic Trophic Niche of Sablefish (Anoplopoma fimbria) and Shortraker Rockfish (Sebastes borealis) in the Northeast Pacific

Fishes
Sablefish (Anoplopoma fimbria, Anoplopomatidae) and shortraker rockfish (Sebastes borealis, Sebastidae) co-occur in deepwater marine habitats in the northeast Pacific. Both species are economically valuable, but their ecologies are not well known.
Raquel Wilson, Tessa J. Hatcher, Andrew D. Suchomel, Mark C. Belk   +3 more
doaj   +1 more source

Age and habitat quality matters: isotopic variation of two sympatric species of rodents in Neotropical Forest [PDF]

, 2017
Dietary studies allow us to understand important ecological patterns such as intra- and interpopulation variation and interspecific differences regarding the use of food sources.
Bovendorp, Ricardo Siqueira, Camargo, Plínio Barbosa, Reis Percequillo, Alexandre, Sarmento, Mariana Montagner de Moraes, Simoes Libardi, Gustavo   +4 more
core   +2 more sources

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Coyote (Canis latrans) use of marine resources in coastal California: A new behavior relative to their recent ancestors [PDF]

, 2018
Coyotes ( Canis latrans) are known to consume marine foods, but the importance and persistence of marine subsidies to coyotes is unknown. Recent access to a marine subsidy, especially if gained following apex predator loss, may facilitate coyote ...
Gifford-Gonzalez, Diane, Koch, Paul L, Reid, Rachel EB   +2 more
core  

Integrated behavioural and stable isotope data reveal altered diet linked to low breeding success in urban-dwelling blue tits (Cyanistes caeruleus) [PDF]

, 2017
Animals often show reduced reproductive success in urban compared to adjacent natural areas. The lower availability and quality of natural food in cities is suggested as one key limiting factor.
Capilla-Lasheras, Pablo, Dominoni, Davide M., Helm, Barbara, McGill, Rona A.R., Pollock, Christopher   +4 more
core   +1 more source

Intraspecific isotopic niche variation in broad-snouted caiman (Caiman latirostris)

Isotopes in Environmental and Health Studies, 2013
Strategies to minimise intraspecific competition are common in wild animals. For example, individuals may exploit food resources at different levels of the food chain. Analyses of stable isotopes are particularly useful for confirming variations in an intraspecific niche because the chemical composition of animals tends to reflect both the food ...
Marques, Thiago S., Lara, Neliton R. F., Bassetti, Luís A. B., Piña, Carlos Ignacio, Camargo, Plínio B., Verdade, Luciano M.   +5 more
openaire   +3 more sources

Injuries in deep time: interpreting competitive behaviours in extinct reptiles via palaeopathology

Biological Reviews, EarlyView.
ABSTRACT For over a century, palaeopathology has been used as a tool for understanding evolution, disease in past communities and populations, and to interpret behaviour of extinct taxa. Physical traumas in particular have frequently been the justification for interpretations about aggressive and even competitive behaviours in extinct taxa.
Maximilian Scott, Julia A. Gamble, Caleb Marshall Brown, Kirstin S. Brink   +3 more
wiley   +1 more source

Isotopic trajectories and interspecific niche partitioning in tropical pelagic sharks

Global Ecology and Conservation
Pelagic sharks are top predators with key role in the structure and functioning of ocean ecosystems. However, little is known on their assemblage-wide trophic ecology.
Zezheng Li, Ziang Chen, Raul Costa-Pereira, Nigel E. Hussey, Yanxuedan Zhang, Yunkai Li   +5 more
doaj   +1 more source