Dinosaur

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Giant dinosaur slims down… a bit (BBC)
Titanosaur (Wikipedia)

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General

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Dinosaurs Science Tracer Bullet (Library of Congress)
Dinosaurs Portal (Wikipedia)

Dictionary

Dinosaur : any of a group (Dinosauria) of extinct often very large chiefly terrestrial carnivorous or herbivorous reptiles of the Mesozoic era — Webster

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Encyclopedia

Dinosaurare a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201 million years ago; their dominance continued through the Jurassic and Cretaceous periods. Reverse genetic engineering and the fossil record both demonstrate that birds are modern feathered dinosaurs, having evolved from earlier theropods during the late Jurassic Period. As such, birds were the only dinosaur lineage to survive the Cretaceous–Paleogene extinction event 66 million years ago. Dinosaurs can therefore be divided into avian dinosaurs, or birds; and non-avian dinosaurs, which are all dinosaurs other than birds. — Wikipedia

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Dinosaurs News -- ScienceDaily All about dinosaurs. Read about dinosaur discoveries including gigantic meat-eating dinosaurs, earliest dinosaurs and more. Dinosaur pictures and articles.

  • First evidence of feathered polar dinosaurs found...
    on November 12, 2019 at 4:02 pm

    A cache of 118 million-year-old fossilized dinosaur and bird feathers has been recovered from an ancient lake deposit that once lay beyond the southern polar circle.

  • Superfood for Mesozoic herbivores?
    on November 8, 2019 at 8:54 pm

    The long-necked, big bodied sauropod dinosaurs comprise some of the largest terrestrial vertebrates to walk the earth. These behemoths were herbivores that survived solely on plant material. There has been long speculation as to what food resources could have supported their size, particularly when young and growing fast.

  • Discriminating diets of meat-eating dinosaurs
    on November 4, 2019 at 1:33 pm

    A big problem with dinosaurs is that there seem to be too many meat-eaters. From studies of modern animals, there is a feeding pyramid, with plants at the bottom, then plant-eaters, and then meat-eaters at the top.

  • Paleontologists discover complete...
    on October 17, 2019 at 4:52 pm

    The discovery of a nearly complete dromaeosaurid Saurornitholestes langstoni specimen is providing critical information for the evolution of theropod dinosaurs, according to new research.

  • Huge dinosaurs evolved different cooling systems...
    on October 16, 2019 at 7:36 pm

    Different dinosaur groups independently evolved gigantic body sizes, but they all faced the same problems of overheating and damaging their brains.


Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Oldest carnivorous dinosaur fossil unearthed in...
    on November 13, 2019 at 2:51 pm

    A team of researchers from Universidade Federal de Santa Maria and Universidade de São Paulo, both in Brazil, has found and identified the oldest carnivorous dinosaur fossil to date. In their paper published in the journal PeerJ, the group describes their finding and where they believe it fits in the history of dinosaurs.

  • What is a 'mass extinction' and are we in one now?
    on November 13, 2019 at 2:39 pm

    For more than 3.5 billion years, living organisms have thrived, multiplied and diversified to occupy every ecosystem on Earth. The flip side to this explosion of new species is that species extinctions have also always been part of the evolutionary life cycle.

  • Ice Age footprints of mammoths and prehistoric...
    on November 12, 2019 at 3:33 pm

    The mammoth lumbers through our imaginations when we think about the world during the most recent Ice Age. They're just one of many giant creatures that our ancestors lived alongside and which became extinct when the climate changed. The giant ground sloth – a large herbivore which was endemic to the Americas—is another.

  • Mechanisms of soft tissue and protein...
    on November 12, 2019 at 2:31 pm

    The existing notion that soft tissue architectures and native proteins can be preserved across geological time is controversial since methods of such preservation remain to be investigated and well-defined. In a new study, Elizabeth M. Boatman and colleagues at the departments of Engineering, Paleontology, Biological Science, Materials and Engineering and the Advanced Light Source in the U.S., tested crosslinking mechanisms for preserved tissue architecture. They used two non-enzymatic, […]

  • First evidence of feathered polar dinosaurs found...
    on November 12, 2019 at 1:45 pm

    A cache of 118 million-year-old fossilized dinosaur and bird feathers has been recovered from an ancient lake deposit that once lay beyond the southern polar circle.