Results 71 to 80 of about 26,502 (258)
The Anatomical Record, EarlyView.Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
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Circadian rhythm of locomotor activity in Bothrops jararacussu (Serpentes: Viperidae) [PDF]
Biotemas, 2007 Many biochemical, physiological, and behavioral parameters exhibited by organisms show daily fluctuations, and most of these fluctuations persist when the organisms are maintained in constant environmental conditions, thus demonstrating that they are ...
José Geraldo Pereira da Cruz
doaj
Ciência Rural, 2011 Cryptosporidium é um protozoário encontrado em uma grande variedade de espécies animais como responsável por casos de gastrite e enterite, porém com epidemiologia pouco conhecida em animais silvestres. A presente investigação teve como objetivo avaliar a
Paulo Custório Ruggiero +3 more
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Korean Journal of Urology, 2013 2013 is the year of the snake in the lunar calendar. The snake symbolizes many things in both Eastern and Western mythologies. Especially in Eastern Asia, snakes are respected as a symbol of harvest and fertility, whereas in Greek mythology, snakes have symbolic significance in science. Just as a snake sheds its old skin, the Korean Journal of Urology (
openaire +2 more sources
The Anatomical Record, EarlyView.Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo +2 more
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Journal of Venomous Animals and Toxins including Tropical Diseases, 2012 Many factors influence microhabitat including climate and the occurrence of predators, prey and suitable shelters. The influence of predators in a semi-extensive breeding system is minimized due to frequent monitoring of the area.
CA Gomes, SM Almeida-Santos
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The Anatomical Record, EarlyView.Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox +8 more
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Clade‐wide morphological and functional variation of the sauropsid columella
The Anatomical Record, EarlyView.Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock +4 more
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Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes
The Anatomical Record, EarlyView.Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield +2 more
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