UCSB conservation ecologist Douglas McCauley and colleagues examine ecologically responsible de-extinction
Extreme global warming caused a severe mass extinction of life on Earth 252 million years ago. It took life up to 9 million years to recover. New study finds clues in the Arctic as to why this recovery took so long.
In Cerro Colorado, located in the Ica Desert of Peru, sedimentary sequences dating back nine million years have been found to host the fossil skeletons of hundreds of marine vertebrates. In 2008, remains of a giant raptorial sperm whale, Livyatan melvillei, were discovered at this site. In September 2014, the same international team of researchers, guided by Giovanni Bianucci from Pisa University (Italy), found a partial skeleton of a mysticete whale in a rock boulder.
The fossil remains of a new tiny species of marsupial lion which prowled the lush rainforests of northern Australia about 18 million years ago have been unearthed in the Riversleigh World Heritage Area of remote north-western Queensland. The UNSW discovery team has named the new species Microleo attenboroughi for its small size and to honor the famous broadcaster and naturalist Sir David Attenborough, in recognition of his support for Riversleigh.
When most people hear the word 'pollinator,' they think of bees and butterflies. However, certain beetles are known to pollinate plants as well, and new fossil evidence indicates that they were doing so 20 million years ago.
Paleontologists with the University of Washington's Burke Museum of Natural History and Culture have discovered a Tyrannosaurus rex, including a very complete skull. The find, which paleontologists estimate to be about 20 percent of the animal, includes vertebrae, ribs, hips and lower jaw bones.
Long ago, one great ocean flowed between North and South America. When the Isthmus of Panama joined the continents, it also separated the Atlantic from the Pacific Ocean. If this took place much earlier than the accepted date of 3 million years ago as recently asserted by some, the implications for both land and sea life would be revolutionary. A new paper in Science Advances firmly set the date at 2.8 million years ago.
The cells that make fin rays in fish play a central role in forming the fingers and toes of four-legged creatures, one of the great transformations required for the descendants of fish to become creatures that walk on land.
Expansion and retreat of sea ice varied consistently in pace with rapid climate changes through past 90,000 years, a new study in Nature Communications shows.
Scientists from the universities of Bristol and Málaga have proposed that the long extinct marsupial lion hunted in a very unique way -- by using its teeth to hold prey before dispatching them with its huge claws.