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Categories: Geoscience: Severe Weather, Paleontology: Dinosaurs

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Paleontology: Dinosaurs
Published

The last day of the dinosaurs      (via sciencedaily.com) 

The asteroid which killed nearly all of the dinosaurs struck Earth during springtime. This conclusion was drawn by an international team of researchers after having examined thin sections, high-resolution synchrotron X-ray scans, and carbon isotope records of the bones of fishes that died less than 60 minutes after the asteroid impacted.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

New fossil birds discovered near China’s Great Wall – one had a movable, sensitive 'chin'      (via sciencedaily.com) 

Two new species of fossil birds that lived alongside the dinosaurs have ben discovered near the Great Wall of China. One of the new species had a sensitive, movable bony appendage at the tip of its lower jaw that it might have used to find food.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

First evidence indicating dinosaur respiratory infection      (via sciencedaily.com) 

Scientists have discovered the first evidence of a unique respiratory infection in the fossilized remains of a dinosaur that lived nearly 150 million years ago. Researchers examined the remains of an immature diplodocid -- a long-necked herbivorous sauropod dinosaur, like 'Brontosaurus' - dating back to the Late Jurassic Period of the Mesozoic Era. The dinosaur nicknamed 'Dolly,' discovered in southwest Montana, had evidence of an infection in the area of its neck vertebrae.

Paleontology: Dinosaurs
Published

Large new titanosaurian dinosaur from the Pyrenees      (via sciencedaily.com) 

Researchers have described the new species of titanosaur dinosaur Abditosaurus kuehnei from the remains excavated at the Orcau-1 site, in the southern Pyrenees (Catalonia, Spain). The semiarticulated 70.5-million-year-old skeleton is the most complete specimen of this herbivorous group of dinosaurs discovered so far in Europe.

Paleontology: Dinosaurs
Published

Low volcanic temperature ushered in global cooling and the thriving of dinosaurs      (via sciencedaily.com) 

Dinosaurs came to flourish during the Jurassic period after a volcanic eruption roughly 201 millions years ago wiped out many marine and land animals, leaving them able to evolve and grow. Now, further details about this eruption and the mass extinction have been revealed. A group of researchers demonstrated how low temperature magma slowly heated sedimentary rocks, causing high sulfur dioxide and low carbon dioxide emissions, a process which cooled the earth.

Paleontology: Dinosaurs
Published

Muscular study provides new information about how the largest dinosaurs moved and evolved      (via sciencedaily.com) 

New research has revealed how giant 50-ton sauropod dinosaurs, like Diplodocus, evolved from much smaller ancestors, like the wolf-sized Thecodontosaurus.

Geoscience: Severe Weather
Published

Past eight years: Warmest since modern recordkeeping began      (via sciencedaily.com) 

Earth's global average surface temperature in 2021 tied with 2018 as the sixth warmest on record, according to independent analyses done by NASA and NOAA. Collectively, the past eight years are the warmest years since modern recordkeeping began in 1880.

Paleontology: Dinosaurs
Published

Within a dinosaur’s head: Ankylosaur was sluggish and deaf      (via sciencedaily.com) 

Scientists took a closer look at the braincase of a dinosaur from Austria. The group examined the fossil with a micro-CT and found surprising new details: it was sluggish and deaf.

Paleontology: Dinosaurs
Published

Earth's first giant      (via sciencedaily.com) 

The two-meter skull of an enormous new ichthyosaur species, Earth's first known giant creature, reveals how both the extinct marine reptiles and modern whales became giants.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

New insights into the timeline of mammal evolution      (via sciencedaily.com) 

A new study has provided the most detailed timeline of mammal evolution to date.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

Exquisitely preserved embryo found inside fossilized dinosaur egg      (via sciencedaily.com) 

A 72 to 66-million-year-old embryo found inside a fossilized dinosaur egg sheds new light on the link between the behavior of modern birds and dinosaurs, according to a new study.

Paleontology: Dinosaurs
Published

An ancient relative of Velociraptor is unearthed in Great Britain      (via sciencedaily.com)     Original source 

A new bird-like dinosaur that used brute strength to overcome its prey has been found by palaeontologists combing through fossils found on the Isle of Wight, on the South Coast of Great Britain.

Paleontology: Dinosaurs Paleontology: Early Mammals and Birds
Published

Sauropod dinosaurs were restricted to warmer regions of Earth      (via sciencedaily.com)     Original source 

A study investigated the enigma of why sauropod fossils are only found at lower latitudes, while fossils of other main dinosaur types seem ubiquitously present, with many located in the polar regions.

Geoscience: Severe Weather
Published

New insights into sea ice and climate change      (via sciencedaily.com) 

A 170 m record of marine sediment cores extracted from Adélie Land in Antarctica is yielding new insights into the complicated relationship between sea ice and climate change.

Geoscience: Geomagnetic Storms Geoscience: Severe Weather Space: The Solar System
Published

New study ties solar variability to the onset of decadal La Nina events      (via sciencedaily.com) 

A new study shows a correlation between the end of solar cycles and a switch from El Nino to La Nina conditions in the Pacific Ocean, suggesting that solar variability can drive seasonal weather variability on Earth.

Geoscience: Severe Weather
Published

Antarctic seals reveal worrying threats to disappearing glaciers      (via sciencedaily.com) 

More Antarctic meltwater is surfacing than was previously known, modifying the climate, preventing sea ice from forming and boosting marine productivity- according to new research. For the first time, researchers have been able to obtain full-depth glacial meltwater observations in winter, using instruments attached to the heads of seals living near the Pine Island Glacier, in the remote Amundsen Sea in the west of Antarctica.

Geoscience: Severe Weather
Published

Researchers use car collisions with deer to study mysterious animal-population phenomena      (via sciencedaily.com) 

By parsing data on weather, deer populations and deer-vehicle collisions in Wisconsin, investigators show spatial synchrony could be driving population cycles, rather than the reverse.

Geoscience: Severe Weather
Published

2020 tied for warmest year on record, NASA analysis shows      (via sciencedaily.com) 

Earth's global average surface temperature in 2020 tied with 2016 as the warmest year on record, according to an analysis by NASA.

Geoscience: Severe Weather
Published

Largest study of Asia's rivers unearths 800 years of paleoclimate patterns      (via sciencedaily.com) 

The SUTD study will be crucial for assessing future climatic changes and making more informed water management decisions.

Geoscience: Severe Weather
Published

Previously undescribed lineage of Archaea illuminates microbial evolution      (via sciencedaily.com) 

Scientists describe a previously unknown phylum of aquatic Archaea that are likely dependent on partner organisms for growth while potentially being able to conserve some energy by fermentation.