Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Emily J Rayfield"'
Autor:
Logan King, Qi Zhao, David L. Dufeau, Soichiro Kawabe, Lawrence Witmer, Chang-Fu Zhou, Emily J. Rayfield, Michael J. Benton, Akinobu Watanabe
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Modern birds possess highly encephalized brains that evolved from non-avian dinosaurs. Evolutionary shifts in developmental timing, namely juvenilization of adult phenotypes, have been proposed as a driver of head evolution along the dinosau
Externí odkaz:
https://doaj.org/article/42fb8a90453243da90fd2e597bff4fd5
Autor:
Pedro H. M. Fonseca, Agustín G. Martinelli, Pamela G. Gill, Emily J. Rayfield, Cesar L. Schultz, Leonardo Kerber, Ana Maria Ribeiro, Heitor Francischini, Marina B. Soares
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-27 (2024)
Abstract The nasal cavity of living mammals is a unique structural complex among tetrapods, acquired along a series of major morphological transformations that occurred mainly during the Mesozoic Era, within the Synapsida clade. Particularly, non-mam
Externí odkaz:
https://doaj.org/article/1619fac403694380a8ecef914ea6e44d
Autor:
Andre J. Rowe, Emily J. Rayfield
Publikováno v:
iScience, Vol 27, Iss 9, Pp 110679- (2024)
Summary: Tyrannosauroids are a clade of theropod dinosaur taxa that varied greatly in their body size distribution. We investigated the feeding performance of six tyrannosaur genera of variable body size and skull morphology. We used 3D finite elemen
Externí odkaz:
https://doaj.org/article/8f7105a5198e42859989368e88183de2
Publikováno v:
PLoS ONE, Vol 10, Iss 12, p e0143834 (2015)
Postcranial skeletal pneumaticity (PSP) is a condition most notably found in birds, but that is also present in other saurischian dinosaurs and pterosaurs. In birds, skeletal pneumatization occurs where bones are penetrated by pneumatic diverticula,
Externí odkaz:
https://doaj.org/article/c88065c370a645ac968ce383dcfb235d
Publikováno v:
PLoS ONE, Vol 10, Iss 3, p e0118882 (2015)
The early tetrapod Acanthostega gunnari is an iconic fossil taxon exhibiting skeletal morphology reflecting the transition of vertebrates from water onto land. Computed tomography data of two Acanthostega skulls was segmented using visualization soft
Externí odkaz:
https://doaj.org/article/78fd57bf7c5d4ab2a12f210ab98f43f6
Autor:
Benjamin W. Griffin, Elizabeth Martin-Silverstone, Rodrigo V. Pêgas, Erik Anthony Meilak, Fabiana R. Costa, Colin Palmer, Emily J. Rayfield
Publikováno v:
PeerJ, Vol 12, p e17678 (2024)
Take-off is a vital part of powered flight which likely constrains the size of birds, yet extinct pterosaurs are known to have reached far larger sizes. Three different hypothesised take-off motions (bipedal burst launching, bipedal countermotion lau
Externí odkaz:
https://doaj.org/article/a10218e2e3a6441e924e2ea9ae2fa4f4
Publikováno v:
Communications Biology, Vol 7, Iss 1, Pp 1-19 (2024)
Abstract Terrestrial ecosystems evolved substantially through the Palaeozoic, especially the Permian, gaining much new complexity, especially among predators. Key among these predators were non-mammalian synapsids. Predator ecomorphology reflect inte
Externí odkaz:
https://doaj.org/article/ea529a44183d45ebb46036a824d870e2
Autor:
Andrew R Cuff, Emily J Rayfield
Publikováno v:
PLoS ONE, Vol 8, Iss 5, p e65295 (2013)
A number of extant and extinct archosaurs evolved an elongate, narrow rostrum. This longirostrine condition has been associated with a diet comprising a higher proportion of fish and smaller prey items compared to taxa with broader, more robust snout
Externí odkaz:
https://doaj.org/article/d3aeec21defa407ea8036cc574813579
Publikováno v:
PLoS ONE, Vol 8, Iss 8, p e72187 (2013)
The flexibility and posture of the neck in sauropod dinosaurs has long been contentious. Improved constraints on sauropod neck function will have major implications for what we know of their foraging strategies, ecology and overall biology. Several h
Externí odkaz:
https://doaj.org/article/2873feab5deb4852a4b0b1a13de6531d
Autor:
Aleksandra V Birn-Jeffery, Charlotte E Miller, Darren Naish, Emily J Rayfield, David W E Hone
Publikováno v:
PLoS ONE, Vol 7, Iss 12, p e50555 (2012)
Pedal claw geometry can be used to predict behaviour in extant tetrapods and has frequently been used as an indicator of lifestyle and ecology in Mesozoic birds and other fossil reptiles, sometimes without acknowledgement of the caveat that data from
Externí odkaz:
https://doaj.org/article/ad13437b6b114a64901d152d2f4fada1