Results 41 to 50 of about 2,820 (236)

New specimens and species of the Oligocene toothed baleen whale Coronodon from South Carolina and the origin of Neoceti [PDF]

open access: yesPeerJ, 2023
Baleen whales (Mysticeti) are gigantic filter-feeding cetaceans possessing the unique soft tissue structure baleen and lacking adult teeth; Oligocene fossils have revealed a wealth of early diverging tooth-bearing mysticetes highlighting the transition ...
Robert W. Boessenecker   +2 more
doaj   +2 more sources

Like phoenix from the ashes: How modern baleen whales arose from a fossil “dark age” [PDF]

open access: yesActa Palaeontologica Polonica, 2019
The evolution of baleen whales (Mysticeti), the largest animals on Earth, was punctuated by a pivotal turnover event. Following their emergence around 36 million years (Ma), mysticetes diversified into a disparate range of toothed and toothless species ...
Felix G. Marx   +2 more
doaj   +1 more source

Lifetime glucocorticoid profiles in baleen of right whale calves: Potential relationships to chronic stress of repeated wounding by Kelp Gulls [PDF]

open access: yes, 2018
Baleen tissue accumulates stress hormones (glucocorticoids, GC) as it grows, along with other adrenal, gonadal and thyroid hormones. The hormones are deposited in a linear fashion such that a single plate of baleen allows retrospective assessment and ...
Ajó, Alejandro A. Fernández   +7 more
core   +1 more source

New cetacean fossils from the late Cenozoic of South Africa

open access: yesFrontiers in Earth Science, 2023
Marine sediments from the western coast of southern Africa record the origin of the Benguela Upwelling System, one of the most productive in the world.
Romala Govender   +3 more
doaj   +1 more source

A record of fossil shallow-water whale falls from Italy [PDF]

open access: yes, 2014
Twenty-five Neogene-Quaternary whales hosted in Italian museum collections and their associated fauna were analysed for evidence of whale-fall community development in shallow-water settings.
Allison   +81 more
core   +2 more sources

Evolution: More Mysticete Mysteries [PDF]

open access: yesCurrent Biology, 2018
Fossils of one of the oldest relatives to baleen-bearing whales have been described from Antarctica. Aspects of its anatomy cast doubt on conventional views for the evolution of filter-feeding and body size in whales.
openaire   +2 more sources

Evidence of microbial activity from a shallow water whale fall (Voghera, northern Italy) [PDF]

open access: yes, 2012
The fossil bones, associated carbonate cements and enclosing concretion of a Miocene mysticete from inner shelf deposits (Monte Vallassa Formation, northern Italy) were analyzed for evidence of microbial activity. Optical and scanning electron microscopy,
Cavalazzi, B   +5 more
core   +4 more sources

Longitudinal progesterone profiles in baleen from female North Atlantic right whales (Eubalaena glacialis) match known calving history [PDF]

open access: yes, 2016
© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Conservation Physiology 4 (2016): cow014, doi:10.1093/conphys/cow014.Reproduction of mysticete whales ...
Hunt, Kathleen E.   +3 more
core   +1 more source

Multiple steroid and thyroid hormones detected in baleen from eight whale species [PDF]

open access: yes, 2017
© The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Conservation Physiology 5 (2017): cox061, doi:10.1093/conphys/cox061.Recent studies have demonstrated ...
Buck, C. Loren   +6 more
core   +1 more source

Multi-year patterns in testosterone, cortisol and corticosterone in baleen from adult males of three whale species [PDF]

open access: yes, 2018
© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Conservation Physiology 6 (2018): coy049, doi:10.1093/conphys/coy049.Male baleen whales have long been
Ajo, Alejandro Fernández   +10 more
core   +1 more source

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