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Prehistoric Scratchpad
PhBP Po10BP

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[]

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)[]

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