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arboreal mammals in a Jurassic forest
2014-09-14 05:18:05

The discovery of three new small squirrel-like species lends evidence to the notion that mammals originated at least 208 million years ago in the late Triassic Period, according to new research appearing in a recent edition of the journal Nature.

First Sex Determining Genes Appeared In Mammals Some 180 Million Years Ago
2014-04-24 03:55:04

Man or woman? Male or female? In humans and other mammals, the difference between sexes depends on one single element of the genome: the Y chromosome.

science-082511-001
2011-08-25 11:05:58

A well-preserved fossil discovered in China provides new evidence that the split between placental mammals and marsupials may have occurred 35 million years earlier than previously believed.

7720955e55f994dacc20cc75ddeeb1c21
2011-04-14 09:12:02

Fossil from China suggests mammalian ear of monotremes evolved separately from that of marsupials and placentals.


Word of the Day
obdormition
  • Sleep; the state or condition of being asleep.
  • The state or condition of numbness of a part due to pressure on a nerve: as, the obdormition of a limb.
The word 'obdormition' comes from a Latin word meaning "to fall asleep".
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