Placental Mammals

Infraclass of Mammals that contain a Placenta. They arose quickly after the demise of the dinosaurs, the first fossils found 1000,000 years after the extinction.

Placental Mammals Web Pages[]

https://en.wikipedia.org/wiki/Placentalia

Classification[]

Phylum Chordata (Chordates) - Animals with a backbone or closely related to one.
- Class Mammalia (Mammals) - {::Mammals}}
  - Clade Eutheria (Eutherians) - Broad infraclass including placental mammals and close relatives.
    - Infraclass Placentalia (Placental Mammals) - Infraclass of Mammals that contain a Placenta. They arose quickly after the demise of the dinosaurs, the first fossils found 1000,000 years after the extinction.
      - Order Proboscidea (Proboscideans) - Mammals with trunks.
      - Order Primates (Primates) - Mammals with long arms.
      - Super Order Laurasiatheria (Laurasiatherians) - Four legged mammals evolved on Laurasia.
        Order Perissodactyla (Odd-Toed Ungulates) - Hooved animals with and odd number of toes, including horses and rhinoceroses.
        
        Order Artiodactyla (Even-Toed Ungulates) - Hooved animals with 2 or 4 toes. Includes deer and cattle.
        
        Order Carnivora (Carnivorans) - Order of carnivorous placental mammals, including cats, dogs, and bears.

Placental Mammals In the News[]

Mammal Diversity Exploded Immediately After Dinosaur Extinction (Dec 2015)[]

http://www.sciencedaily.com/releases/2015/12/151221193937.htm