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Mammalia
Relation
Succeeds:
Supersedes
Marsupial c. BT 460 Placentalia c. BT 459 Carnivora c. BT 453 Ungulates c. BT 452
Creation Date
c. BT 462
Created to carry and nurture young to ensure they survive longer. Created with placenta made to carry young and have mammary glands to produce milk for young.