'Sabre-toothed squirrel': First known mammalian skull from Late Cretaceous discovered in South America
Paleontologist Guillermo Rougier, Ph.D., professor of anatomical sciences and neurobiology at the University of Louisville, and his team have reported their discovery of two skulls from the first known mammal ...
Prehistoric greenhouse data from ocean floor could predict Earth's future
New research from the University of Missouri indicates that Atlantic Ocean temperatures during the greenhouse climate of the Late Cretaceous Epoch were influenced by circulation in the deep ocean. These changes ...
Primitive birds shared dinosaurs' fate
A new study puts an end to the longstanding debate about how archaic birds went extinct, suggesting they were virtually wiped out by the same meteorite impact that put an end to dinosaurs 65 million years ...
Tree resin captures evolution of feathers on dinosaurs and birds
Secrets from the age of the dinosaurs are usually revealed by fossilized bones, but a University of Alberta research team has turned up a treasure trove of Cretaceous feathers trapped in tree resin. The resin ...
Peru researchers make rare ancient insect find
Researchers in Peru said Tuesday they have discovered the remains of ancient insects and sunflower seeds trapped inside amber dating from the Miocene epoch, some 23 million years ago.
Archeologists find what might be the smallest Mesozoic dinosaur
Flowers' rapid growth rate can be traced back 65 million years
Researchers have discovered that an evolutionary change from 65 million years ago may have set the pace for the rapid growth rate of present-day flowering plants.
Deep-sea worms eat found to eat fish bones
(PhysOrg.com) -- A new study led by a scientist at Scripps Institution of Oceanography at UC San Diego is painting a more complete picture of an extraordinary sea worm that makes its living in the depths of ...
Even Canadian rocks are different
Canadians have always seen themselves as separate and distinct from their American neighbours to the south, and now they have geological proof.
Arctic climate variation under ancient greenhouse conditions
Tiny organisms preserved in marine sediments hold clues about Arctic climate variation during an ancient episode of greenhouse warming.
Rare insect fossil reveals 100 million years of evolutionary stasis
Researchers have discovered the 100 million-year-old ancestor of a group of large, carnivorous, cricket-like insects that still live today in southern Asia, northern Indochina and Africa. The new find, in ...
Ammonites were probably eaten by fellow cephalopods
Using discards, scientists discover different dinosaurs' stomping grounds
(PhysOrg.com) -- By examining the type of rock in which dinosaur fossils were embedded, an often unappreciated part of the remains, scientists have determined that different species of North American dinosaurs ...
New discoveries in North America's Great Plains bring ammonites to life
New research on ammonites, a group of previously common marine invertebrates that went extinct after the Chicxuluxb impact 65 million years ago, is filling in details about the biology of these organisms.