Results 71 to 80 of about 5,135 (264)

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

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, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

The return to water in ancestral Xenopus was accompanied by a novel mechanism for producing and shaping vocal signals

eLife, 2019
Listeners locate potential mates using species-specific vocal signals. As tetrapods transitioned from water to land, lungs replaced gills, allowing expiration to drive sound production. Some frogs then returned to water.
Ursula Kwong-Brown, Martha L Tobias, Damian O Elias, Ian C Hall, Coen PH Elemans, Darcy B Kelley   +5 more
doaj   +1 more source

Popliteal sinus venipuncture in anurans

Journal of the American Veterinary Medical Association
Abstract 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, Larry J. Minter, Julie A. Balko, Ryan S. DeVoe   +3 more
openaire   +2 more sources

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

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, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Like a Fish out of Water: Temporary Habitat Switching Detected in Aquatic Tadpoles Resting Above the Water's Surface

Ecology and Evolution
Amphibian tadpoles are typically aquatic and constrained to freshwater throughout development. These circumstances change at metamorphosis, whereupon individuals may complete a partial or full habitat shift towards terrestriality and gain the capacity to
John Gould, Claire Larkin, Colin McHenry
doaj   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

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, Kenneth D. Rose, Rachel H. Dunn, Kishor Kumar, Rajendra S. Rana, Ashok Sahni, Lachham Singh, Thierry Smith, Jordan W. Crowell   +8 more
wiley   +1 more source

Comparison of the responses of male Japanese treefrog (Dryophytes japonicus) to the rain and advertisement calls

Journal of Ecology and Environment
Anurans communicate with others using several types of calls such as advertisement, encounter, release, and rain calls. Some treefrog species produce rain calls from their daytime shelters, such as trees and bushes, during both the breeding and non ...
Hahyun Nam, Jin-Kyoung Kim, Jiho Park, Jongsun Kim, Min-Woo Park, Jiyeon Cheon, Daesik Park   +6 more
doaj   +1 more source

Interpreting a Legacy Fossil Assemblage Excavated From Waribruk (New Guinea II Cave), GunaiKurnai Aboriginal Country, Snowy River National Park, Southeastern Australia

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, Bruno David, Jean‐Jacques Delannoy, Russell Mullett, Fiona Petchey, Helen Green, Joanna Fresløv, GunaiKurnai Land and Waters Aboriginal Corporation   +7 more
wiley   +1 more source

Fauna de anuros en la ciudad de Salta, Argentina

Revista de Biología Tropical, 2005
La pérdida y transformación del hábitat generado por actividades humanas es una de las principales causas de disminución de biodiversidad. Los anfibios constituyen un grupo en franca declinación a nivel global debido a múltiples motivos, entre ellos la ...
Rebeca Acosta, Rosa Vera Mesones, Alejandro Núñez   +2 more
doaj  

Resistance to Axial Traction Decreases Over Time Following Repaired Periportal Capsulotomies During Hip Arthroscopy

Arthroscopy, EarlyView.
Purpose To determine if distraction distance changes on an axial traction examination between the time zero capsular repair state and a later follow‐up traction examination in patients with staged bilateral hip arthroscopies for femoroacetabular impingement syndrome.
Benjamin T. Johnson, Zoe D. Trutner, Allan K. Metz, Richard N. Puzzitiello, William L. Johns, Joseph Featherall, Stephen K. Aoki   +6 more
wiley   +1 more source