Fossil redefines mammal history
A small, 160-million-year-old Chinese fossil has something big to say about the emergence of mammals on Earth.
The shrew-like creature is the earliest known example of an animal whose kind evolved to provide nourishment to their unborn through a placenta.
Its features clearly set it apart from marsupial mammals, which adopt a very different reproductive strategy.
The discovery pushes back the date the two groups took up their separate lines, according to Nature magazine.
The journal carries a paper written by a team of palaeontologists led by Zhe-Xi Luo from the Carnegie Museum of Natural History, Pittsburgh, US.
It describes the fossil remains of an animal unearthed in China's northeast Liaoning Province, which has produced so many stunning fossils in recent years....
comments powered by Disqus
- Egypt’s Nasser is blamed for current problems by the regime
- ‘Google must not be left to censor history’ – Wikipedia founder
- The most important battle you've probably never heard of
- ISIS is destroying both Shia and Sunni shrines and buildings in Mosul
- Study: Violent radicalism in UK isn't associated with poverty
- Plagiarism scandals galore … but no consequences?
- Stephen Cohen was once considered a top Russia historian. Now he publishes odd defenses of Vladimir Putin, says critic
- Historian who calls bull&%$@ on July 4th parade causes controversy
- This is what motivated history students in high school and middle school can do!
- Obama to award National Humanities Medals to 3 historians