Science Daily - Paleontology

Some species of pterosaurs flew by flapping their wings while others soared like vultures, demonstrates a new study. Findings include a new pterosaur with a five-meter wingspan, which is one of the most complete pterosaurs ever recovered from Afro-Arabia.

Chemists offer a new explanation for how collagen in dinosaur bones may have survived millions of years: An atomic-level interaction prevents its bonds from being broken down by water.

A new study showing how a prehistoric sea cow was preyed upon by not one, but two different carnivores -- a crocodilian and a shark -- is revealing clues into both the predation tactics of ancient creatures and the wider food chain millions of years ago.

A 'tag-team' between the oceans and continents millions of years ago devastated marine life and altered the course of evolution on Earth, according to a new study. Scientists say a string of severe environmental crises which happened between 185 and 85 million years ago triggered mass extinctions among ocean-living species.

A study is calling into question the reliability of the earthquake record of Cascadia. The researchers analyzed a selection of turbidite layers from the Cascadia subduction zone dating back about 12,000 years ago with an algorithm that assessed how well turbidite layers correlated with one another. They found that, in most cases, the correlation between the turbidite samples was no better than random. Since turbidites can be caused by a range of phenomena, and not just earthquakes, the results suggest that the turbidite record's connection to past earthquakes is more uncertain than previously thought.

By analyzing foram shells recovered in drill cores, study led by geologists links rapid climate change that led to thermal maxima 50 million years ago to rising CO2 levels.

An international team of paleontologists has found matching sets of Early Cretaceous dinosaur footprints on what are now two different continents.

Fossils are used to reconstruct evolutionary history, but not all animals and plants become fossils and many fossils are destroyed before we can find them (e.g., the rocks that contain the fossils are destroyed by erosion). As a result, the fossil record has gaps and is incomplete, and we're missing data that we need to reconstruct evolutionary history. Now, a team of sedimentologists and stratigraphers examined how this incompleteness influences the reconstruction of evolutionary history. To their surprise, they found that the incompleteness itself is actually not such a big issue.

Archeologists say new findings might help resolve the debate about Clovis points and reshape how we think about what life was like roughly 13,000 years ago. After an extensive review of writings and artwork -- and an experiment with replica Clovis point spears -- a team of archaeologists says humans may have braced the butt of their weapons against the ground in a way that would impale a charging animal. The force would have driven the spear deeper into the predator's body, unleashing a more damaging blow than even the strongest prehistoric hunters would have been capable of by throwing or jabbing megafauna.

A new study shows how the mismatch between where fossils are preserved and where humans likely lived may influence our understanding of early human evolution.

The asteroid that led to the extinction of the dinosaurs 66 million years ago probably came from the outer solar system.

The study found that the Port Askaig Formation, composed of layers of rock up to 1.1 km thick, was likely laid down between 662 to 720 million years ago during the Sturtian glaciation -- the first of two global freezes thought to have triggered the development of complex, multicellular life.

Ancient fossil beans about the size of modern limes, and among the largest seeds in the fossil record, may provide new insight into the evolution of today's diverse Southeast Asian and Australian rainforests, according to researchers who identified the plants.

Catastrophic volcanic eruptions that warmed the planet millions of years ago shed new light on how plants evolve and regulate climate. Researchers reveal the long-term effects of disturbed natural ecosystems on climate in geological history and its implications for today.

What distinguishes the growth and development patterns of early mammals of the Jurassic period? Paleontologists have been able to gauge the lifespan and growth rates of these ancient animals, and even when they reached maturity, by studying growth rings in fossilized tooth roots.

Mammoths, the massive pre-historic ice age cousins of the modern-day elephant, have always been understood to have inhabited parts of British Columbia, but the question of when has always been a bit woolly. Now, a new study has given scientists the clearest picture yet when the giant mammals roamed Vancouver Island.

A new study reports the discovery of extremely rare early human fossils from the Indonesian island of Flores, including an astonishingly small adult limb bone. Dated to about 700,000 years old, the new findings shed light on the evolution of Homo floresiensis, the so-called 'Hobbits' of Flores whose remains were uncovered in 2003 at Liang Bua cave in the island's west.

Seeds, twigs, and insect parts found under two miles of ice confirm Greenland's ice sheet melted in the recent past, the first direct evidence that the center -- not just the edges -- of the two-mile-deep ice melted away in the recent geological past. The new research indicates that the giant ice sheet is more fragile than scientists had realized until the last few years -- and reveals increased risk of sea-level catastrophe in a warmer future.

A tiny fossil penguin plays a huge role in the evolutionary history of the bird, an international study shows.

Shifts in the Earth's continental plates that drove long-term changes in sea level set the stage for the evolution of the earliest animals on Earth, a study suggests.