- published: 25 May 2015
- views: 1291
Placentalia ("Placentals") is one of the three subdivisions of the class of animals Mammalia; the other two are Monotremata and Marsupialia. The placentals are primarily distinguished from other mammals in that the fetus is carried in the uterus of its mother where it is nourished via a placenta, until the live birth of a fully developed offspring occurs.
Placental mammals are anatomically distinguished from other mammals by:
Marsupials vs. Placental Mammals
Researchers Reconstruct the Common Ancestor of Placental Mammals
Placental Mammals
Placental Mammal Rap
Science Bulletins: Ancestor of All Placental Mammals Identified
Biology Evolution part 9 (Adaptive Radiation : Marsupials & Placental Mammals) class 12 XII
Placental Mammal
CLADOGRAM--18 PLACENTAL MAMMALS
Why Being A Placental Mammal Is The Worst | Science with Nadine
Episode 4: When did Marsupial and Placental Mammals split?
A tiny, furry-tailed creature was the earliest ancestor of placental mammals -- a widely diverse group of animals ranging from bats to humans -- according to a new study by a team of international scientists, including a core group of Museum researchers. In findings published in the February 8 issue of the journal Science, the researchers analyzed the world's largest dataset of genetic and physical traits to find that placental mammals diversified into present-day lineages much later than is commonly thought: after the extinction event 65 million years ago that eliminated non-avian dinosaurs. This finding, and the visualization of the placental ancestor -- an insect-eating animal that weighed less than a pound -- was made with the help of a cloud-based and publicly accessible database call...
Mammals are a highly diverse group. Ranging widely in size and shape, unique specializations have allowed them to inhabit nearly every land and water environment on Earth. Recently, researchers at the American Museum of Natural History and other institutions collaborated in a groundbreaking study to identify a likely ancestor to all placentals—mammals that nourish young in the womb with a placenta—using genetic and morphological data to construct the shrew-like creature. Science Bulletins is a production of the National Center for Science Literacy, Education, and Technology (NCSLET), part of the Department of Education at the American Museum of Natural History. RELATED LINKS Science: The Placental Mammal Ancestor and the Post-K-Pg Radiation of Placentals http://www.sciencemag.org/conten...
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Paleontology, Fossils, Cretaceous, Metatheria, Mammalian, Eutheria, Eomaia, Epipubic bone, skeleton, hair, tiny little wormy babies