Results 101 to 110 of about 24,078 (347)
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
wiley +1 more source
Size of marsh frogs in the Eurasian Otter's diet in Southern Bulgaria
Hystrix, the Italian Journal of Mammalogy, 2008 <strong>Abstract</strong> Our study was carried out in the south of Bulgaria, providing original data on the size of the marsh frog <em>Pelophylax ridibundus</em> (Pallas, 1771) in otter <em>Lutra lutra</em> ...
Dilian Georgiev
doaj +1 more source
The Anatomical Record, EarlyView.Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza +3 more
wiley +1 more source
Popliteal sinus venipuncture in anurans
Journal of the American Veterinary Medical AssociationAbstract OBJECTIVE To demonstrate an underutilized, reliable, and technically simple anuran venipuncture technique by use of the popliteal sinus. ANIMALS Medium to large (> 30 g) anuran species. METHODS The animal is manually restrained using an encircling grip around the pelvic girdle. With the ventrum facing the phlebotomist, the phlebotomist
Ashlyn C. Heniff +3 more
openaire +2 more sources
BMC Evolutionary Biology, 2014 BackgroundThe degree of postcopulatory sexual selection, comprising variable degrees of sperm competition and cryptic female choice, is an important evolutionary force to influence sperm form and function.
Yu Zeng, S. Lou, W. Liao, R. Jehle
semanticscholar +1 more source
The Anatomical Record, EarlyView.Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro +7 more
wiley +1 more source
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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Allometric escape from acoustic constraints is rare for frog calls
Ecology and Evolution, 2020 Allometric constraint is a product of natural selection and physical laws, particularly with respect to body size and traits constrained by properties thereof, such as metabolism, longevity, and vocal frequency.
João Filipe Riva Tonini +6 more
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Archaeology in Oceania, EarlyView.ABSTRACT In this paper we report on faunal remains recovered from a legacy archaeological excavation undertaken in the rockshelter entrance of Waribruk (New Guinea II Cave), a GunaiKurnai site located on the west bank of the Snowy River, East Gippsland, southeastern Australia.
Matthew C. McDowell +7 more
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Alternative life cycle strategies of Megalodiscus temperatus in tadpoles and metamorphosed anurans
Parasite, 2008 Megalodiscus temperatus (Stafford, 1905) is a common paramphistome trematode of North American amphibians with a two host life cycle and has been reported to infect frogs and rarely tadpoles.
Bolek M.G., Janovy J.
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