Results 61 to 70 of about 34,326 (336)

Pauli Exclusion by n→π* Interactions: Implications for Paleobiology

ACS Central Science
Proteins have evolved to function in an aqueous environment. Collagen, which provides the bodily scaffold for animals, has a special need to retain its integrity. This need was addressed early on, as intact collagen has been detected in dinosaur fossils,
Jinyi Yang, Volga Kojasoy, Gerard J. Porter, Ronald T. Raines   +3 more
semanticscholar   +1 more source

Making the most of clade selection [PDF]

, 2017
Clade selection is unpopular with philosophers who otherwise accept multilevel selection theory. Clades cannot reproduce, and reproduction is widely thought necessary for evolution by natural selection, especially of complex adaptations.
Doolittle, W. Ford
core   +1 more source

Silesaurid (Archosauria: Dinosauriformes) remains from the base of the Dockum Group (Late Triassic: Otischalkian) of Texas provide new insights to the North American record of dinosauriforms

The Anatomical Record, EarlyView.
Abstract Silesaurids (Archosauria: Dinosauriformes) are found in Middle to Upper Triassic deposits across Pangea, but few stratigraphic sections record the evolution of the group in one geographic area over millions of years. Here, we describe silesaurid remains from the oldest of the Upper Triassic stratigraphic sequence from the base of the Dockum ...
Frederick B. Tolchard, Brynden W. Perkins, Sterling J. Nesbitt   +2 more
wiley   +1 more source

New evidence for the earliest ornithischian dinosaurs from Asia

iScience
Summary: The Early Jurassic ornithischian dinosaurs in Laurasia are dominated by armored dinosaurs, with other early ornithischian groups being rare. Here, a new taxon, Archaeocursor asiaticus gen. et sp.
Xi Yao, Qi Zhao, Tingcong Ren, Guangbiao Wei, Xing Xu   +4 more
doaj   +1 more source

Estimating the evolutionary rates in mosasauroids and plesiosaurs: discussion of niche occupation in Late Cretaceous seas [PDF]

PeerJ, 2020
Observations of temporal overlap of niche occupation among Late Cretaceous marine amniotes suggest that the rise and diversification of mosasauroid squamates might have been influenced by competition with or disappearance of some plesiosaur taxa.
Daniel Madzia, Andrea Cau
doaj   +2 more sources

The relationship between form and function of the carnivore mandible

The Anatomical Record, EarlyView.
Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley   +1 more source

Hierarchy Theory of Evolution and the Extended Evolutionary Synthesis: Some Epistemic Bridges, Some Conceptual Rifts [PDF]

, 2018
Contemporary evolutionary biology comprises a plural landscape of multiple co-existent conceptual frameworks and strenuous voices that disagree on the nature and scope of evolutionary theory.
A Etxeberria, A Fuentes, A Parravicini, A Vianello, A Wagner, AC Love, Alejandro Fábregas-Tejeda, AV Badyaev, B Bocxlaer Van, BS Lieberman, BS Lieberman, D Noble, D Sepkoski, D Sloan-Wilson, DD Turner, DJ Depew, DJ Futuyma, DJ Nicholson, DL Hull, DM Walsh, DR Piperno, DT Campbell, E Danchin, E Jablonka, E Jablonka, E Jablonka, E Mayr, E Mayr, E Serrelli, E Szathmáry, EI Svensson, ES Vrba, ES Vrba, ES Vrba, F Suman, F Vergara-Silva, FJ Odling-Smee, FJ Odling-Smee, Francisco Vergara-Silva, GB Müller, GB Müller, GG Simpson, GJ Cooper, GP Wagner, GP Wagner, I Tëmkin, I Tëmkin, I Tëmkin, J Beatty, J Griesemer, J Griesemer, J Odling-Smee, J Odling-Smee, JJ Welch, JW Pepper, K Laland, K Laland, K Stotz, KN Laland, KN Laland, KN Laland, KN Laland, M Bertolaso, M Blute, M Lynch, M Martínez, M Nei, M Pavličev, M Pigliucci, M Pigliucci, MD Laubichler, MJ Denton, MW Kirschner, N Eldredge, N Eldredge, N Eldredge, N Eldredge, N Eldredge, N Eldredge, N Eldredge, N Eldredge, P Alberch, P Bateson, P Godfrey-Smith, PJ Bowler, R Amundson, R Amundson, R Riedl, R Sansom, RG Delisle, RG Winther, S Caianiello, S Okasha, S Okasha, S Oyama, S Sultan, SF Gilbert, SJ Gould, SJ Gould, T Ingold, T Ingold, T Pievani, T Pievani, T Pievani, T Pievani, TA Grantham, TS Kemp, TS Kemp, U Dieckmann, W Miller III, W Miller III, WB Provine, WD Allmon, WE Reif   +113 more
core   +1 more source

Inter‐microscope comparability of dental microwear texture data obtained from different optical profilometers: Part I Reproducibility of diet inference using different instruments

The Anatomical Record, EarlyView.
Abstract Dental microwear texture analysis (DMTA) has become a well‐established method for dietary inference and reconstruction in both extant and extinct mammals and other tetrapods. As the volume of available data continues to grow, researchers could benefit from combining published data from various studies to perform meta‐analyses.
Daniela E. Winkler, Mugino O. Kubo
wiley   +1 more source

Mineralized area of the human rib cross‐sections from early puberty until adulthood

The Anatomical Record, EarlyView.
Abstract Ribs undergo numerous changes during growth and development. Although they occur both externally and internally, the latter are not as extensively documented during the transition from puberty to adulthood. Therefore, it is unknown how rib cross‐sectional mineralized area changes during this period.
J. M. López‐Rey, D. M. Doe, O. Cambra‐Moo, A. González Martín, D. García‐Martínez   +4 more
wiley   +1 more source

Paleobiology of a large mammal community from the late Pleistocene of Sonora, Mexico

Quaternary Research, 2021
A paleontological deposit near San Clemente de Térapa represents one of the very few Rancholabrean North American Land Mammal Age sites within Sonora, Mexico. During that time, grasslands were common, and the climate included cooler and drier summers and
Rachel A. Short, Laura G. Emmert, Nicholas A. Famoso, Jeff M. Martin, J. Mead, Sandra L. Swift, A. Baez   +6 more
semanticscholar   +1 more source