Phrases with «placental mammals»

"Placental mammals" refers to a type of mammals, which include humans, dogs, cats, and many other animals, that give birth to babies that have developed inside their mother's womb with the help of a placenta. The placenta is a structure that allows the baby to get food and oxygen from the mother and get rid of waste products. Full definition

Sentences with «placental mammals»

  • Earth's four groups of placental mammals likely arose from an ancient southern continent. (sciencemag.org)
  • «We discovered the existence of a short DNA sequence capable of activating a specific Hox gene, and which is present only in placental mammals and marsupials», explains Ruben Schep, the first author of the article. (sciencedaily.com)
  • If the earliest placental mammals originated in Gondwanaland, they could have been heading north throughout the entire period from about 150 million years ago to 50 million years ago. (discovermagazine.com)
  • (see all sentences)
a b c d e f g h i j k l m n o p q r s t u v w x y z