搜索结果: 1-15 共查到“理学 Fossils”相关记录28条 . 查询时间(0.062 秒)
What fossils tell us about the dining habits of dinosaurs（图）
Earth and Environmental Science Veterinary Medicine Research
2023/6/29
Dinosaur paleontologists are detectives, piecing together clues from fragments of fossils to decipher what a whole organism looked like, how it moved, and how it behaved. While even a preschooler coul...
Leaf fossils show severe end-Cretaceous plant extinction in Patagonia（图）
Leaf fossils severe end-Cretaceous plant extinction Patagonia
2021/1/18
The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants they relied on for food. Fossil leaf assemblages from Patagonia su...
Fossils support new hypothesis for origin of hoofed mammals（图）
Fossils support new hypothesis origin hoofed mammals
2020/12/11
New research published in the Journal of Vertebrate Paleontology describes a fossil family that illuminates the origin of perissodactyls -- the group of mammals that includes horses, rhinos ...
New Argentine fossils uncover history of celebrated conifer group（图）
New Argentine fossils uncover history celebrated conifer group
2020/7/3
Newly unearthed, well-preserved conifer fossils from Patagonia, Argentina, show that an endangered and celebrated group of tropical West Pacific trees has roots in the ancient supercontinent that once...
Fossils may need air to form（图）
Fossils air to form
2019/11/15
Some of the world's most exquisite fossil beds were formed millions of years ago during time periods when Earth's oceans were largely without oxygen.That association led paleontologists to believe tha...
Well-preserved fossils show ostrich relatives lived in North America 50 million years ago
fossils ostrich relatives North America 50 million years ago
2016/7/15
Exceedingly well-preserved bird fossil specimens dating 50 million years represent a new species that is a previously unknown relative of the modern-day ostrich, according to a new paper co-authored b...
Newly discovered reptile fossils offer clues about elevation history of Andes Mountains and climate change
reptile fossils elevation history Andes Mountains climate change
2016/1/8
On an arid plateau in the Andes Mountains of southern Bolivia, a Case Western Reserve University researcher flagged what turned out to be the fossil remains of a tortoise nearly five feet long—a find ...
Ancient fossils show effect of humans on Caribbean wildlife
Ancient fossils humans Caribbean wildlife
2015/11/12
Nearly 100 fossil species found in a flooded cave on Abaco Island in the Bahamas reveal a story of persistence against all odds--at least until the time humans stepped foot on the islands.Researchers ...
Fossils,frogs,floating islands and expanding Earth in changing-radius cartography A comment to a discussion on Journal of Biogeography
changing radius cartography paleogeography biogeography Pacific paleobiogeography expanding Earth
2015/9/2
In this short note I have tried to make clear the issues surrounding a recent discussion on changing-radius paleobiogeographical problems of the Pacific Ocean biotic distribution. It is stressed that ...
On a tropical island, fossils reveal the past – and possible future – of polar ice
On a tropical island, fossils reveal the past possible future polar ice
2015/1/20
The balmy islands of Seychelles couldn’t feel farther from Antarctica, but their fossil corals could reveal much about the fate of polar ice sheets.About 125,000 years ago, the average global temperat...
550 Million Year Old Fossils Provide New Clues about Fossil Formation（图）
550 Million Year Old Fossils Provide New Clues Fossil Formation
2014/12/30
COLUMBIA, Mo. – A new study from University of Missouri and Virginia Tech researchers is challenging accepted ideas about how ancient soft-bodied organisms become part of the fossil record. ...
Fossils cast doubt on climate-change projections on habitats（图）
climate-change projections habitats
2014/12/1
EUGENE, Ore. — Nov. 18, 2014 — Leave it to long-dead short-tailed shrew and flying squirrels to outfox climate-modelers trying to predict future habitats.
PALEOBIOLOGY OF THE CLIMACTICHNITES TRACKMAKER: AN ENIGMATIC LATE CAMBRIAN ANIMAL KNOWN ONLY FROM TRACE FOSSILS
Climactichnites Musculopodus trace fossils trackway paleobiology
2014/11/4
Based on a thorough examination of museum and field Climactichnites specimens, two species of this trace, which is restricted to North America, are recognized, each representing a unique behavioral va...
PALEOBIOLOGY OF THE CLIMACTICHNITES TRAKMAKER: AN ENIGMATIC LATE CAMBRIAN ANIMAL KNOWN ONLY FROM TRAE FOSSILS
PALEOBIOLOGY CLIMACTICHNITES TRACKMAKER LATE CAMBRIAN ANIMAL TRAE FOSSILS
2014/10/22
Based on a thorough examination of museum and field Climactichnites specimens, two species of this trace, which is restricted to North America, are recognized, each representing a unique behavioral va...
PALEOBIOLOGY OF THE CLIMACTICHNITES TRAKMAKER: AN ENIGMATIC LATE CAMBRIAN ANIMAL KNOWN ONLY FROM TRAE FOSSILS
PALEOBIOLOGY CLIMACTICHNITES TRACKMAKER LATE CAMBRIAN ANIMAL TRAE FOSSILS
2014/10/20
Based on a thorough examination of museum and field Climactichnites specimens, two species of this trace, which is restricted to North America, are recognized, each representing a unique behavioral va...