Mammals are endothermic amniotes that possess  mammary glands and hair (fur)‏ Mammary glands – produce milk (females only)...
While most mammals give birth to young, the  monotremes  are egg-laying mammals
Marsupials  – pouched mammals that give birth to undeveloped  embryos that then develop inside a pouch
Placental mammals  – embryo develops inside the mother’s uterus where an organ called the placenta provides the embryo wit...
 
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Phylum Chordata - Class Mammalia

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Phylum Chordata - Class Mammalia

  1. 1. Mammals are endothermic amniotes that possess mammary glands and hair (fur)‏ Mammary glands – produce milk (females only)‏ for offspring Hair – made out of the protein keratin ; helps maintain endothermy There are three groups of mammals
  2. 2. While most mammals give birth to young, the monotremes are egg-laying mammals
  3. 3. Marsupials – pouched mammals that give birth to undeveloped embryos that then develop inside a pouch
  4. 4. Placental mammals – embryo develops inside the mother’s uterus where an organ called the placenta provides the embryo with nutrients and oxygen and removes waste products

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