Definify.com
Webster 1913 Edition
Mammalia
‖
Mam-ma′li-a
,Noun.
pl.
[NL., from L.
mammalis
. See Mammal
.] (Zool.)
The highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother.
☞ Mammalia are divided into three subclasses; –
I. Placentalia
. This subclass embraces all the higher orders, including man. In these the fetus is attached to the uterus by a placenta.II. Marsupialia
. In these no placenta is formed, and the young, which are born at an early state of development, are carried for a time attached to the teats, and usually protected by a marsupial pouch. The opossum, kangaroo, wombat, and koala are examples.III. Monotremata
. In this group, which includes the genera Echidna
and Ornithorhynchus
, the female lays large eggs resembling those of a bird or lizard, and the young, which are hatched like those of birds, are nourished by a watery secretion from the imperfectly developed mammae.Definition 2024
Mammalia
Mammalia
See also: mammalia
Translingual
Proper noun
Mammalia
- A taxonomic class within the superclass Tetrapoda – the mammals.
Hypernyms
- (class): Vertebrata - subphylum; Gnathostomata - infraphylum; Tetrapoda - superclass; Reptiliomorpha, Amniota, Synapsidomorpha, Synapsida - clades; Pelycosauria - informal group; Eupelycosauria - clade; Therapsida - order; Theriodontia, Cynodontia, Mammaliaformes - clades
Hyponyms
- (class): Prototheria, Theria (Trechnotheria) - infraclasses; Australosphenida - clade; †Symmetrodonta - extinct subclass
Translations
References
- Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living Organisms. PLoS ONE 10(4): e0119248. doi: 10.1371/journal.pone.0119248. pmid:25923521
mammalia
mammalia
See also: Mammalia
English
Noun
mammalia
- (obsolete) Alternative letter-case form of Mammalia
- 1894, Thomas H. Huxley, Discourses:
- It is undeniable, for example, that the evidence in favour of the derivation of the horse from the later tertiary Hipparion, and that of the Hipparion from Anchitherium, is as complete and cogent as such evidence can reasonably be expected to be; and the further investigations into the history of the tertiary mammalia are pushed, the greater is the accumulation of evidence having the same tendency.