Mammalia Mam*ma"li*a, n. pl. [NL., from L. mammalis. See {Mammal}.] (Zo["o]l.) 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. [1913 Webster]

Note: Mammalia are divided into three subclasses; [1913 Webster] I. {Placentalia}. This subclass embraces all the higher orders, including man. In these the fetus is attached to the uterus by a placenta. [1913 Webster] 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. [1913 Webster] 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 mamm[ae]. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Marsupialia — Mar*su pi*a li*a (m[aum]r*s[=u] p[i^]*[=a] l[i^]*[.a]), prop. n. pl. [NL., fr. L. marsupium a pouch, bag, purse, Gr. marsy pion, dim. of ma rsypos, ma rsipos.] (Zo[ o]l.) A subclass of Mammalia, including nearly all the mammals of Australia and… …   The Collaborative International Dictionary of English

  • Marsupialĭa — Marsupialĭa, so v.w. Beutelthiere …   Pierer's Universal-Lexikon

  • Marsupialĭa — (lat.), soviel wie Beuteltiere (s. d.) …   Meyers Großes Konversations-Lexikon

  • Marsupialia — Marsupialĭa, die Beuteltiere (s.d.) und die Beutelquallen (s. Lappenquallen) …   Kleines Konversations-Lexikon

  • Marsupialia —   [griechisch lateinisch], die Beuteltiere.   …   Universal-Lexikon

  • Marsupialia — Marsupialia, einzige Ordnung der ⇒ Metatheria (Beuteltiere) …   Deutsch wörterbuch der biologie

  • Marsupialia — Marsupiaux …   Wikipédia en Français

  • Marsupialia — Para ranas marsupiales, véase Gastrotheca.   Marsupiales Rango temporal: Cretácico Presente …   Wikipedia Español

  • Marsupialia — Beutelsäuger Koala (Phascolarctos cinereus) Systematik Stamm: Chordatiere (Chordata) …   Deutsch Wikipedia

  • Marsupialia — sterbliniai statusas T sritis ekologija ir aplinkotyra apibrėžtis Žinduolių(Mammalia) klasės tikrųjų žvėrių (Theria) poklasio žemesniųjų žvėrių (Metatheria) infraklasės būrys (Marsupialia) – žinduoliai, turintys savotišką lytinių organų sandarą… …   Ekologijos terminų aiškinamasis žodynas