Results 171 to 180 of about 3,951 (203)

A new cetothere (Cetacea: Mysticeti) from the early Miocene of Japan

Journal of Vertebrate Paleontology, 2002
Abstract Two well-preserved specimens of a “cetothere” from the Lower Miocene Awa and Mizunami Groups, Japan, are described as Isanacetus laticephalus, gen. et sp. nov. It is distinguished by the following combination of characters: fossa for the stapedial muscle elongated anteroposteriorly, with a fully ossified floor; anteroposteriorly broad ...
Toshiyuki Kimura
exaly   +2 more sources

Evolution of gigantism in right and bowhead whales (Cetacea: Mysticeti: Balaenidae)

Biological Journal of the Linnean Society, 2021
AbstractThe evolution of gigantic body size represents a key to understand the ecological role of baleen whales in oceanic ecosystems. Many efforts have been devoted to the formulation of equations relating different body parts to total body length and mass in living and fossil mysticetes, mainly focusing on balaenopterid and balaenopterid-like ...
Bisconti M., Pellegrino L., Carnevale G.
openaire   +2 more sources

Niche Partitioning in Oligocene Toothed Mysticetes (Mysticeti: Aetiocetidae)

Journal of Mammalian Evolution, 2015
Niche partitioning has long been considered to be a fundamental part of speciation and difference in body size is a straightforward proxy for ecology and niche partitioning. Here we report a new aetiocetid specimen from the upper part of Morawan Formation (Oligocene; late Chattian, ~26–24 Ma), Ashoro, Hokkaido, Japan.
Cheng-Hsiu Tsai, Tatsuro Ando
openaire   +2 more sources

The systematics of right whales (Mysticeti: Balaenidae)

Marine Mammal Science, 2011
AbstractBalaenidae (right whales) are large, critically endangered baleen whales represented by four living species. The evolutionary relationships of balaenids are poorly known, with the number of genera, relationships to fossil taxa, and position within Mysticeti in contention.
Morgan Churchill, Annalisa Berta, Thomas Deméré   +2 more
openaire   +1 more source

Mysticeti Flower 1864

2018
Key to families of Mysticeti in Korea 1 Dorsal fin absent; rostrum strongly arched in side; rostrum base slightly wider than tip....................... Balaenidae - Dorsal fin (or dorsal humps) present; rostrum flat or slightly arched..............................................
Jo, Yeong-Seok, Baccus, John T., Koprowski, John L.   +2 more
openaire   +1 more source

Retinal Topography in Two Species of Baleen Whale (Cetacea: Mysticeti)

Brain, Behavior and Evolution, 2018
Little is known about the visual systems of large baleen whales (Mysticeti: Cetacea). In this study, we investigate eye morphology and the topographic distribution of retinal ganglion cells (RGCs) in two species of mysticete, Bryde’s whale (<i>Balaenoptera edeni</i>) and the humpback whale (<i>Megaptera novaeanglia</i>).
Thomas J. Lisney, Shaun P. Collin
openaire   +2 more sources

Sur deux os de Jubarte (Mammalia, Mysticeti)

Bulletin mensuel de la Société linnéenne de Lyon, 1970
L'omoplate et la vertèbre d'un grand Cétacé actuel ont été trouvées fortuitement grâce à un article de la presse locale. Leur étude détaillée montre qu'elles appartiennent à un Mégaptère, mysticète dont l'ostéologie est peu connue et qui est très rare dans les collections. Elles indiquent un individu de taille exceptionnelle.
Guérin, Claude, Rage, Jean-Claude
openaire   +2 more sources

MYSTICETI Flower 1864

2005
MYSTICETI Flower 1864 Families: 4 families with 6 genera and 13 species: Family Balaenidae Gray 1821 (2 genera with 4 species) Family Balaenopteridae Gray 1864 (2 genera with 7 species and 8 subspecies) Family Eschrichtiidae Ellerman and Morrison-Scott 1951 (1 genus with 1 species) Family Neobalaenidae Gray 1873 (1 genus with 1 species)
Wilson, Don E., Reeder, DeeAnn
openaire   +1 more source

The Telford “Cetothere” (Cetacea: Mysticeti: Cetotheridae)

Transactions of the Royal Society of South Australia, 2010
AbstractThe mandible of a small whale, discovered in lower Miocene Gambier Limestone in a limestone quarry near Mount Gambier, South Australia, is described. Although preserving no diagnostic features in the strict sense, it lacks a character of modern mysticetes, and is tentatively referred to the extinct Family Cetotheriidae.
openaire   +1 more source

The Earliest Gulp-Feeding Mysticete (Cetacea: Mysticeti) from the Oligocene of New Zealand

Journal of Mammalian Evolution, 2015
Horopeta umarere is a new genus and species of extinct baleen whales from the Kokoamu Greensand (early Chattian, Oligocene, in the range 25–27 Ma), Hakataramea Valley, New Zealand. The geological age makes Horopeta umarere one of the earliest named baleen whales. Phylogenetic analysis indicates that Horopeta umarere may be the earliest crown Mysticeti (
Cheng-Hsiu Tsai, R. Ewan Fordyce
openaire   +1 more source