The evolution of complex life over the past 600 million years was disrupted by at least five mass extinctions, one of which occurred at the close of the Triassic period. The end-Triassic extinction ...
Re-examination of some North American collections of the late middle to early late Norian pterioid bivalve Monotis confirms the separation of M. (M.) alaskana Smith from the European type species M.
It was relatively small compared to the giants that would follow it later in Earth’s history. With a hip height of approximately 0.3 meters (about a foot) and a length of perhaps a meter (roughly ...
International Journal of Plant Sciences, Vol. 159, No. 2 (Mar., 1998), pp. 358-366 (9 pages) Vegetative shoots, ovulate cones, and putative seeds of Conewagia longiloba gen. et sp. nov., a fossil ...
As the great 20th century paleontologist William Diller Matthew once wrote, "The story of life on Earth is a splendid drama, as interesting as we watch its action and study the interplay of causes and ...
The Daily Galaxy on MSN
One of the World’s Oldest Dinosaurs Has Been Unearthed in Argentina, and It’s Nearly Intact
High in the remote folds of the Andes, at more than 3,000 meters above sea level, Argentine researchers have unearthed ...
Earth’s continents are constantly shifting. About 252 to 199 million years ago, all the continents were actually one huge “supercontinent” surrounded by one enormous ocean. Slowly, this giant ...
Exhibition Loong Diving in the Ocean -- The Ancient Ocean in Triassic Guizhou at the National Natural History Museum of China in Beijing is offering a glilmpse of how ichthyosaurs, or fish lizards, ...
Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. When you think of an amphibian, the first thing to jump to mind is ...
When ecologists talk about climate change, they tend to recognize there will be winners and losers. While it could drive some species to extinction, others will migrate readily to follow their ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
反馈