Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Gary W Kaiser"'
Publikováno v:
PLoS ONE, Vol 12, Iss 12, p e0189473 (2017)
Mesozoic bird fossils from the Pacific Coast of North America are rare, but small numbers are known from the Late Cretaceous aged sediments of Hornby Island, British Columbia. Most are unassociated fragments that offer little information, but additio
Externí odkaz:
https://doaj.org/article/4a5fe3569cb2468e824075ffc5e4a688
Autor:
Mariela S Fernández, Rodolfo A García, Lucas Fiorelli, Alejandro Scolaro, Rodrigo B Salvador, Carlos N Cotaro, Gary W Kaiser, Gareth J Dyke
Publikováno v:
PLoS ONE, Vol 8, Iss 4, p e61030 (2013)
We report the first evidence for a nesting colony of mesozoic birds on Gondwana: a fossil accumulation in Late Cretaceous rocks mapped and collected from within the campus of the National University of Comahue, Neuquén City, Patagonia (Argentina). H
Externí odkaz:
https://doaj.org/article/7f892f72e89847f1a18d09f5cb3901ef
Publikováno v:
PLoS ONE, Vol 6, Iss 2, p e15665 (2011)
The evolution of the avian wing has long fascinated biologists, yet almost no work includes the length of primary feathers in consideration of overall wing length variation. Here we show that the length of the longest primary feather (f(prim)) contri
Externí odkaz:
https://doaj.org/article/c61032c04e04425290786dcd861c4574
Publikováno v:
Canadian Journal of Earth Sciences. 56:803-813
We survey the known avian fossils from Ypresian (early Eocene) fossil sites of the North American Okanagan Highlands, mainly in British Columbia (Canada). All specimens represent taxa that were previously unknown from the Eocene of far-western North
Autor:
Gary W. Kaiser, Mátyás Vremir, Mariela Soledad Fernández, Darren Naish, Chris Laurent, Xia Wang, Gareth J. Dyke
Publikováno v:
Scientific Reports
Scientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Scientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
A Late Cretaceous-aged multi-taxon nesting site from Romania preserved in three dimensions reveals the earliest example of nest site sharing yet known from the vertebrate fossil record. Eggshell and osteological evidence combined in this single accum
Autor:
Gary W. Kaiser, Gareth J. Dyke
Publikováno v:
Biology Bulletin. 42:607-615
The evolution of the feathering arrangements that comprise the modern avian wing can be tracked using both physical evidence from the known fossil record and by interpreting aerodynamic theory. Evidence from both the fossil record and from living bir
Publikováno v:
Canadian Journal of Earth Sciences. 48:1489-1496
Few fossil birds and non-avian dinosaurs are known from Mesozoic sediments bordering the eastern margin of the Pacific Ocean. Here, we describe additional remains of Late Cretaceous birds from a deep-water marine turbidite sequence of the Northumberl
Autor:
Gary W. Kaiser, Gareth J. Dyke
Publikováno v:
Records of the Australian Museum. 62:207-216
It has been suggested that relative egg size in living birds is strongly correlated with the developmental mode of the young; "altricial" (helpless) or "precocial" (independent). Using a data set of extant taxa we show that altricial birds lay relati
Autor:
Elizabeth Martin-Silverstone, Carl H. W. Jonsson, Orsolya Vincze, Gareth J. Dyke, Ria McCann, Gary W. Kaiser, Colin Palmer
Publikováno v:
PLoS ONE
PLoS ONE, Vol 10, Iss 10, p e0141794 (2015)
PLoS ONE, Vol 10, Iss 10, p e0141794 (2015)
Total body mass (TBM) is known to be related to a number of different osteological features in vertebrates, including limb element measurements and total skeletal mass. The relationship between skeletal mass and TBM in birds has been suggested as a w
Publikováno v:
Canadian Journal of Zoology. 82:644-652
We measured flight speeds (n = 3000) of Marbled Murrelet, Brachyramphus marmoratus (J.F. Gmelin, 1789), to determine whether flight speeds of an exceptionably fast bird coincide with the maximum-range speeds (Vmr) predicted by aerodynamic theory. The