Dinosaurs: New Findings & Theories

Discussion in 'New Science' started by ramonmercado, Sep 16, 2005.

  1. Jim

    Jim Abominable Snowman

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  2. Jim

    Jim Abominable Snowman

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    Info on the evolution of amphibians in the Carboniferous and Permian periods. During these time periods amphibians were often the dominate predators of swamps, rivers and even the costal areas.. Typically dinosaurs, mammals, etc. receive more attention than that given to the lost era of prehistoric amphibians. Prionosuchus the largest amphibian to ever live was a predator that reached ~9 meter in length. Kryostega collinsoni at 5 meters in length had enormous head and very large teeth.It was the top predator of the time.

     
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  3. ramonmercado

    ramonmercado CyberPunk

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    Kept cuckoos out of the nest as well.

    How do you sit on your nest of eggs when you weigh over 1,500kg?

    Carefully - according to a new study from an international team of researchers in Asia and North America.

    Dinosaur parenting has been difficult to study, due to the relatively small number of fossils, but the incubating behaviour of oviraptorosaurs has now been outlined for the first time.

    Scientists believe the largest of these dinosaurs arranged their eggs around a central gap in the nest.

    This bore the parent's weight, while allowing them to potentially provide body heat or protection to their developing young, without crushing the delicate eggs.

    http://www.bbc.co.uk/news/science-environment-44071223
     
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  4. Jim

    Jim Abominable Snowman

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  5. EnolaGaia

    EnolaGaia I knew the job was dangerous when I took it ... Staff Member

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    This newly published study overturns some longstanding assumptions about pterosaurs' movements / motions relating to their flight. The joint mobility assessment approach used here may have broad applicability to analyzing the motions of other extinct animals.

    SOURCE: https://www.upi.com/Science_News/20.../?utm_source=sec&utm_campaign=sl&utm_medium=3

    ABSTRACT for the published paper: http://rspb.royalsocietypublishing.org/content/285/1879/20180727
     
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  6. Jim

    Jim Abominable Snowman

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    Interesting read, unfortunately it leaves out a trump card how did pterosaurs theatrically fly (it suggest ongoing research here)? From what I gather (per article) pterosaurs were more bird hipped, as were many dinosaurs. Yet pterosaurs wings more closely resembled bats. We may never know.
    Paleontology is a difficult and theoretical science working primarily with w only ancient bones (often fragmented -incomplete), and very rare bits bit's of skin, scales, feathers. Attempting to at times to model them after existing reptiles and birds whose appearance, habits, mobility that may have been different.
     
  7. Jim

    Jim Abominable Snowman

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    Acheron101 Flaneur and Dilettante

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  9. Jim

    Jim Abominable Snowman

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  10. Jim

    Jim Abominable Snowman

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  11. ramonmercado

    ramonmercado CyberPunk

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    Did it carry it's lunch?

    The world’s oldest pterosaur may have had a pouch like a pelican

    In a patch of Utah desert no larger than a living room, scientists working a decade ago discovered a late Triassic treasure trove: 18,000 bones from nine unusual species of reptiles, all victims of a watering hole that dried up some 201 million to 210 million years ago. Now, they’re reporting on the most interesting find to date: the oldest ever pterosaur. The find is especially unusual because ancient flying reptiles of that era were thought to live in coastal areas.

    Caelestiventus hanseni, whose genus name is Latin for “heavenly wind,” had a wing span of about 1.5 meters (similar to modern-day ospreys) and a flange of bone suggesting it sported a fleshy wattle under its chin—or possibly a small pouch like today’s pelicans. The discovery—which included bits of the skull, jawbone, and a finger bone from its wing—pushes back the record of desert-dwelling pterosaurs a whopping 65 million years, the researchers report online today in Nature Ecology & Evolution.

    http://www.sciencemag.org/news/2018...ly_2018-08-13&et_rid=394299689&et_cid=2254918
     
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  12. Swifty

    Swifty Generation Y

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    We were in the Little Gems rock shop in Cromer this morning when I spotted a small dinosaur fossil named a Chickenosaurus, a quirky name and the price tag was £800 .. this picture isn't great quality, the head was also intact although hard to see in this pic ..

    achickenosaurus.jpg

    A little bit of research shows there's plans to 'bring them back' using modern chickens ..

    http://www.dinosaurculture.com/chickenosaurus/
     

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