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  • Embargo expired:
    20-Feb-2018 7:05 PM EST

Article ID: 689846

Brain Size of Human Ancestors Evolved Gradually Over 3 Million Years

University of Chicago Medical Center

Modern humans have brains that are more than three times larger than our closest living relatives, chimpanzees and bonobos. Scientists don't agree on when and how this dramatic increase took place, but new analysis of 94 hominin fossils shows that average brain size increased gradually and consistently over the past three million years.

Released:
20-Feb-2018 1:45 PM EST

Article ID: 681585

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Released:
16-Feb-2018 2:50 PM EST

Arts and Humanities

Moa-skeleton.jpg
  • Embargo expired:
    12-Feb-2018 3:00 PM EST

Article ID: 689335

Middle Earth Preserved in Giant Bird Dung

University of Adelaide

While the giant birds that once dominated New Zealand are all extinct, a study of their preserved dung (coprolites) has revealed many aspects of their ancient ecosystem, with important insights for ongoing conservation efforts.

Released:
12-Feb-2018 8:00 AM EST
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  • Embargo expired:
    23-Jan-2018 7:05 PM EST

Article ID: 688314

Researchers Pose Revolutionary Theory on Horse Evolution

New York Institute of Technology

Scientists have long wondered how the horse evolved from an ancestor with five toes to the animal we know today. While it is largely believed that horses simply evolved with fewer digits, researchers at New York Institute of Technology College of Osteopathic Medicine (NYITCOM) pose a new theory that suggests remnants of all five toes are still present within the hooves of the horse.

Released:
23-Jan-2018 11:00 AM EST
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Article ID: 687981

University of Arkansas Scientists Digitally Preserve Important Arkansas Dinosaur Tracks

University of Arkansas, Fayetteville

University of Arkansas researchers used LiDAR imaging to digitally preserve and study important dinosaur tracks.

Released:
16-Jan-2018 12:05 PM EST
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  • Embargo expired:
    11-Jan-2018 7:00 AM EST

Article ID: 687727

New Turkey-Sized Dinosaur From Australia Preserved in an Ancient Log-Jam

PeerJ

The partial skeleton of a new species of turkey-sized herbivorous dinosaur has been discovered in 113 million year old rocks in southeastern Australia. The fossilized tail and foot bones give new insight into the diversity of the small, bipedal herbivorous dinosaurs called ornithopods.

Released:
10-Jan-2018 7:00 AM EST
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Article ID: 687661

Mass Extinctions Remove Species but Not Ecological Variety

University of Chicago

Though mass extinctions wiped out staggeringly high numbers of species, they barely touched the overall "functional" diversity--how each species makes a living, be it filtering phytoplankton or eating small crustaceans, burrowing or clamping onto rocks. University of Chicago scientists documented this surprising trend in a study on extinctions published Jan. 5 in the Proceedings of the National Academy of Sciences.

Released:
9-Jan-2018 10:05 AM EST
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  • Embargo expired:
    6-Jan-2018 12:00 AM EST

Article ID: 687269

Tracking Ancient Whale Migrations with Fossilized Barnacles

Society for Integrative and Comparative Biology (SICB)

New research on the isotopic composition of barnacle shells shows that prehistoric whales were undertaking migrations, just like their modern-day descendants.

Released:
27-Dec-2017 5:05 PM EST
  • Embargo expired:
    4-Jan-2018 12:00 AM EST

Article ID: 687275

The Secret World of Dinosaur Tracks

Society for Integrative and Comparative Biology (SICB)

Scans of fossilized dinosaur prints show how some dinosaur feet moved not just on top of but through the earth. The results of this study will be presented at the annual conference of the Society for Integrative and Comparative Biology in San Francisco, CA on January 4, 2018

Released:
27-Dec-2017 4:40 PM EST
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  • Embargo expired:
    18-Dec-2017 3:00 PM EST

Article ID: 686859

Oldest Fossils Ever Found Show Life on Earth Began Before 3.5 Billion Years Ago

University of Wisconsin-Madison

Researchers at UCLA and the University of Wisconsin–Madison have confirmed that microscopic fossils discovered in a nearly 3.5 billion-year-old piece of rock in Western Australia are the oldest fossils ever found and indeed the earliest direct evidence of life on Earth.

Released:
14-Dec-2017 11:05 AM EST

Showing results 3140 of 224

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