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'Redesigned Hammer' That Forged Evolution Of Pregnancy In Mammals Found
Researchers have shown that
the origin and evolution of
the placenta and uterus in
mammals is associated with
evolutionary changes in a
... > full story
DNA Shows That Last Woolly Mammoths Had North American Roots
In a surprising reversal of
conventional wisdom, a
DNA-based study has revealed
that the last of the woolly
mammoths--which lived
between 40,000 and 4,000
... > full story
Molecular Evolution Is Echoed In Bat Ears
Echolocation may have
evolved more than once in
bats, according to new
research from the University
of Bristol. ... > full story
Big Predatory Mammals Such As Felines Need Between 5 And 7 Different Types Of Prey To Meet Their Dietary Needs
Faced with earlier studies
stating that the big
predators such as tigers,
lions, and lynxes fulfill
their dietary needs by
... > full story
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Big Brains Arose Twice In Higher Primates
July 9, 2008 — After taking a fresh look at an old fossil, researchers determined that the brains of the ancestors of modern neotropical primates were as small as those of their early fossil simian counterparts in ... > full story -
Fossil Feathers Preserve Evidence Of Color, Say Scientists
July 9, 2008 — The traces of organic material found in fossil feathers are remnants of pigments that once gave birds their color, according to Yale scientists whose paper in Biology Letters opens up the potential ... > full story -
Newcomer In Early Eurafrican Population?
July 2, 2008 — A complete mandible of Homo erectus was discovered at the Thomas I quarry in Casablanca by a French-Moroccan team. This mandible is the oldest human fossil uncovered from scientific excavations in ... > full story -
Woolly Mammoth Gene Study Changes Extinction Theory
June 12, 2008 — A large genetic study of the extinct woolly mammoth has revealed that the species was not one large homogenous group, as scientists previously had assumed, and that it did not have much genetic ... > full story -
Evolution Of An Imprinted Domain In Mammals
June 3, 2008 — A new PLoS Biology article investigates the evolution of genomic imprinting in a specific region of the mammalian genome. The work shows that different regions became imprinted at different times ... > full story -
World First Discovery: Genes From Extinct Tasmanian Tiger Function In A Mouse
May 20, 2008 — Researchers have extracted genes from the extinct Tasmanian tiger, inserted it into a mouse and observed a biological function -- this is a world first for the use of the DNA of an extinct species to ... > full story -
Platypus Genome Explains Animal's Peculiar Features; Holds Clues To Evolution Of Mammals
May 7, 2008 — The duck-billed platypus: part bird, part reptile, part mammal -- and the genome to prove it. Scientists have decoded the genome of the platypus, showing that the animal's peculiar mix of features is ... > full story -
Dinosaurs Probably Lacked Tissue To Generate Heat
April 27, 2008 — Scientists have discovered why birds, unlike mammals, lack a tissue that is specialized to generate heat. There is a surprising implication that the same lack of heat-generating tissue may have ... > full story -
Clues To Ancestral Origin Of Placenta Emerge In Genetics Study
April 17, 2008 — Researchers have uncovered the first clues about the ancient origins of a mother's intricate lifeline to her unborn baby, the placenta, which delivers oxygen and nutrients critical to the baby's ... > full story -
Primitive Mouse-Like Creature May Be Ancestral Mother Of Australia's Unusual Pouched Mammals
March 26, 2008 — A new study has confirmed that a primitive mouse-like creature that lived 55 million years ago (called Djarthia) is also a primitive relative of the small marsupial known as the Monito del Monte -- ... > full story
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