eutherian


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Related to eutherian: metatherian

eu·ther·i·an

 (yo͞o-thîr′ē-ən)
n.
Any of various mammals of the infraclass Eutheria, including all of the species, such as primates, carnivores, whales, ruminants, bats, and rodents, in which the female bears live young that are nourished before birth by means of a complex placenta. Also called placental mammal.

[From New Latin Euthēria, infraclass name : Greek eu-, eu- + Greek thēria, pl. of thērion, wild animal; see treacle.]

eu·ther′i·an adj.

eutherian

(juːˈθɪərɪən)
adj
(Zoology) of, relating to, or belonging to the Eutheria, a subclass of mammals all of which have a placenta and reach an advanced state of development before birth. The group includes all mammals except monotremes and marsupials
n
(Zoology) any eutherian mammal
[C19: from New Latin Euthēria, from Greek eu- + thēria, plural of thērion beast]

eu•the•ri•an

(yuˈθɪər i ən)

adj.
1. belonging or pertaining to the group Eutheria, comprising the placental mammals.
n.
2. a eutherian animal.
[1875–80; < New Latin Eutheri(a) (< Greek eu- eu- + thēría, pl. of thēríon wild beast) + -an1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.eutherian - mammals having a placentaeutherian - mammals having a placenta; all mammals except monotremes and marsupials
mammal, mammalian - any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk
Eutheria, subclass Eutheria - all mammals except monotremes and marsupials
farm animal, livestock, stock - any animals kept for use or profit
bull - mature male of various mammals of which the female is called `cow'; e.g. whales or elephants or especially cattle
cow - mature female of mammals of which the male is called `bull'
yearling - an animal in its second year
buck - mature male of various mammals (especially deer or antelope)
doe - mature female of mammals of which the male is called `buck'
insectivore - small insect-eating mainly nocturnal terrestrial or fossorial mammals
aquatic mammal - whales and dolphins; manatees and dugongs; walruses; seals
carnivore - a terrestrial or aquatic flesh-eating mammal; "terrestrial carnivores have four or five clawed digits on each limb"
Fissipedia - in some classifications considered a suborder of Carnivora
aardvark, Orycteropus afer, ant bear, anteater - nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata
bat, chiropteran - nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate
gnawing mammal, lagomorph - relative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawing
gnawer, rodent - relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
Ungulata - in former classifications a major division of Mammalia comprising all hoofed mammals; now divided into the orders Perissodactyla (odd-toed ungulates) and Artiodactyla (even-toed ungulates)
hoofed mammal, ungulate - any of a number of mammals with hooves that are superficially similar but not necessarily closely related taxonomically
Unguiculata - in former classifications a major division of Mammalia comprising mammals with nails or claws; distinguished from hoofed mammals and cetaceans
unguiculate, unguiculate mammal - a mammal having nails or claws
cony, das, dassie, hyrax, coney - any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes
pachyderm - any of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus
edentate - primitive terrestrial mammal with few if any teeth; of tropical Central America and South America
anteater, pangolin, scaly anteater - toothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites
primate - any placental mammal of the order Primates; has good eyesight and flexible hands and feet
tree shrew - insectivorous arboreal mammal of southeast Asia that resembles a squirrel with large eyes and long sharp snout
colugo, flying cat, flying lemur - arboreal nocturnal mammal of southeast Asia and the Philippines resembling a lemur and having a fold of skin on each side from neck to tail that is used for long gliding leaps
proboscidean, proboscidian - massive herbivorous mammals having tusks and a long trunk
plantigrade, plantigrade mammal - an animal that walks with the entire sole of the foot touching the ground as e.g. bears and human beings
digitigrade, digitigrade mammal - an animal that walks so that only the toes touch the ground as e.g. dogs and cats and horses
Adj.1.eutherian - of or relating to or belonging to the subclass Eutheria; "eutherian mammals"
References in periodicals archive ?
In eutherian mammals, sex determination is dependent on the Y-gene Sry, but in the other major mammalian class, the metatherians, it is controlled not only by a Y-locus, but also by the complement of X chromosomes.
Although humans are trichromatic and can perceive and discriminate colors better than most eutherian mammals (reviewed in Cuthill 2006), our color perception is not as acute and does not encompass as wide of a spectral range as birds.
Protamine 1: protamine 2 stoichiometry in the sperm of eutherian mammals.
As the earliest known fossil ancestral to placental mammals, Juramaia providesd fossil evidence of the date when eutherian mammals diverged from other mammals: metatherians (whose descendants include marsupials such as kangaroos) and monotremes (such as the platypus).
He covers the late Cretaceous nonavian dinosaur record, in the shadow of nonavian dinosaurs, in search of the most ancient Eutherian ancestors of placental mammals, patterns and causes of extinction at the K/T boundary, and when and whence mammals after the impact.
Herein, we report the results of a comparative genomic analyses of the [beta]-globin gene in 11 different taxa; nine eutherian [Homo sapiens (human), Macaca mulatta (rhesus monkey), Pan troglodytes (chimpanzee), Rattus norvegicus (mouse), Mus musculus (rat), Canis familiaris (dog), Bos taurus (cow), Equus caballus (horse), Oryctolagus cuniculus (rabbit)], one dinosaurian (avian) Gallus gallus (chicken) and a neopterygii (marine) Danio rerio (fish), describing fundamental similarities and differences among taxa to enable better evolutionary understanding of functional [beta]-globin gene (Fig.