Encyclopedia > Placentalia

  Article Content

Placentalia

Placental mammals
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Subclass:Theria
Infraclass:Placentalia
Orders
Dermoptera (flying lemur)
Primates
Scandentia (tree shrew)
Rodentia (redents)
Lagomorpha (hare, rabbit, pika)
Pholidota (pangolin)
Chiroptera (bats)
Insectivora (insectivores)
Carnivora (carnivores)
Artiodactyla (ungulates)
Cetacea (whales)
Perissodactyla (horse, tapir, rhinoceros)
Tenrecidae[?] (Tenrecs)
Chrysochloridae (Golden moles)
Macroscelidea (elephant shrew)
Tubulidentata (aardvark)
Hyracoidea (hyrax, dassie)
Proboscidea (elephant)
Sirenia (sea cows)
Xenarthra (edentata: anteater, sloth, armadillo)

Placentalia is the name of one of the principal groups of living mammals, and is often used in scientific classification as a subclass or an infraclass. The other two extant groups are the Monotremata and the Marsupalia. There are other groups of extinct mammals. The vast majority of living mammals are placental. The Placentalia are uniquely different from all other mammals in that the fetus is nourished during gestation via the placenta. The lineage is first known from the Lower Cretaceous of China, (Eomaia).



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
1660

... 19 - Friedrich Hoffmann, physician and chemist (+ 1742) April 16 - Hans Sloane, British physician May 2 - Alessandro Scarlatti, Italian composer (+ 1725) May ...