Results 71 to 80 of about 75,647 (379)
The American Upper Ordovician standard [PDF]
, 1960 Pt. I is in the Journal of Paleontology, v.33, no.6, 1959, p. 1029-1068 and Pt. III is in the Journal of Paleontology, v.34, no.2, 1960, p. 237-294, Pt. IV is in Journal of Sedimentary Petrology, v. 30, No. 2, pp. 283-296, figs.
Norman, Carl E. +1 more
core
The Anatomical Record, EarlyView.Abstract The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho
Narimane Chatar +5 more
wiley +1 more source
Philosophy, Theory, and Practice in BiologyStudies of the history of life provide an interesting case study of how the questions scientists can ask, and from which they expect reliable answers, change over time.
Douglas Erwin
doaj +2 more sources
, 2018 In The First Fossil Hunters: Paleontology in Greek and Roman Times, Adrienne Mayor suggests that the fossilized remains of prehistoric megafauna were likely seen as proof of the cyclopean monsters, fearsome gods and wrathful giants of Classical myth. The truth is that paleontological thought in antiquity was far more sophisticated. As early as the 6th
Josh London, Manuel J Laime
openaire +3 more sources
Predicting ecology and hearing sensitivities in Parapontoporia—An extinct long‐snouted dolphin
The Anatomical Record, EarlyView.Abstract Analyses of the cetacean (whale and dolphin) inner ear provide glimpses into the ecology and evolution of extinct and extant groups. The paleoecology of the long‐snouted odontocete (toothed whale) group, Parapontoporia, is primarily marine with its depositional context also suggesting freshwater tolerance.
Joyce Sanks, Rachel Racicot
wiley +1 more source
The Journal of Wildlife Management, Volume 87, Issue 2, February 2023., 2023 We describe the genetic characteristics and dynamics, and the recent evolutionary history of the Canarian houbara bustard, an endemic to the Canary Islands. We identified high gene flow and two genetic units, with genetic bottlenecks and subsequent inbreeding in both of them, and propose potential management actions to avoid its extinction. Abstract An
Jose L. Horreo +5 more
wiley +1 more source
Revista de Lingüística y Lenguas Aplicadas, 2007 <p class="MsoNormal">Este artículo analiza la modalidad epistémica asertiva (expresión de la certeza) en un conjunto de noticias científicas sobre el hallazgo paleontológico del llamado Hombre ...
José Antonio Díaz Rojo
doaj +1 more source
The Anatomical Record, EarlyView.Abstract The three mammalian auditory ossicles enhance sound transmission from the tympanic membrane to the inner ear. The anterior anchoring of the malleus is one of the key characters for functional classification of the auditory ossicles. Previous studies revealed a medial outgrowth of the mallear anterior process, the processus internus ...
Franziska Fritzsche +2 more
wiley +1 more source
Evolution and extinction dynamics in rugged fitness landscapes [PDF]
, 1997 Macroevolution is considered as a problem of stochastic dynamics in a system with many competing agents. Evolutionary events (speciations and extinctions) are triggered by fitness records found by random exploration of the agents' fitness landscapes. As a consequence, the average fitness in the system increases logarithmically with time, while the rate
arxiv +1 more source
Quantitative assessment of masticatory muscles based on skull muscle attachment areas in Carnivora
The Anatomical Record, EarlyView.Abstract Masticatory muscles are composed of the temporalis, masseter, and pterygoid muscles in mammals. Each muscle has a different origin on the skull and insertion on the mandible; thus, all masticatory muscles contract in different directions. Collecting in vivo data and directly measuring the masticatory muscles anatomically in various Carnivora ...
Kai Ito +4 more
wiley +1 more source