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Which one of the following best describes ‘Sidersaura marae’?
  • a)
    An archaeological site discovered recently
  • b)
    A prehistoric meteorite impact crater
  • c)
    A newly discovered species of dinosaur
  • d)
    An invasive alien species found recently
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which one of the following best describes ‘Sidersaura marae&rsqu...
Paleontologists in Argentina recently found fossil fragments of a new species of dinosaur named Sidersaura marae.
About Sidersaura marae:
  • It is a new species of sauropod dinosaur.
  • It lived during the Cenomanian age of the Late Cretaceous epoch, between 96 and 93 million years ago, in today’s Patagonian region.
  • It belongs to the Rebbachisauridae, a large family of sauropod dinosaurs known from fragmentary fossil remains from South America, Africa, North America, Europe, and Asia.
  • These dinosaurs are distinguished from other sauropods by their distinctive teeth.  Some species had tooth batteries similar to those of hadrosaurs and ceratopsian dinosaurs.
  • Rebbachisaurids were very important dinosaurs in Cretaceous ecosystems and disappeared in the middle of this period in an extinction event that took place 90 million years ago.
  • It is one of the last rebbachisaurids.
  • Features of Sidersaura marae:
  • It was up to 20 m in length, had an estimated mass of 15 tons, and had a very long tail.
  • One of the characteristics that distinguishes Sidersaura marae from other dinosaurs is the star-shaped shape of the hemal arches (tail bones).
  • Its skull bones are robust, unlike those of the rest of its closest relatives.
  • Another cranial feature that differentiates Sidersaura marae from other rebbachisaurids is its frontoparietal foramen, which is basically a hole in the roof of the skull.
Hence option c is the correct answer.
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Which one of the following best describes ‘Sidersaura marae’?a)An archaeological site discovered recentlyb)A prehistoric meteorite impact craterc)A newly discovered species of dinosaurd)An invasive alien species found recentlyCorrect answer is option 'C'. Can you explain this answer?
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