Sidersaura marae
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Context
- A new species of long-necked herbivorous dinosaur named Sidersaura marae was discovered in the province of Neuquén, Argentina.
Sidersaura marae
- The newly-discovered dinosaur lived in what is now Argentina during the Cenomanian age of the Late Cretaceous epoch, between 96 and 93 million years ago.
- Scientifically named Sidersaura marae, the ancient beast was up to 20 m in length, had an estimated mass of 15 tons, and had a very long tail.
- The animal belongs to Rebbachisauridae, a large family of sauropod dinosaurs known for 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 hadrosaur 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 place90 million years ago.
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PRACTICE QUESTION Question: What distinguishes Rebbachisaurids, such as Sidersaura marae, from other sauropod dinosaurs, and when did the extinction event leading to the disappearance of Rebbachisaurids occur? a) Rebbachisaurids are known for their unique teeth, and the extinction event occurred during the Albian age. b) Rebbachisaurids are recognized by their long tails, and the extinction event occurred during the Cenomanian age. c) Rebbachisaurids had tooth batteries, and the extinction event occurred approximately 90 million years ago. d) Rebbachisaurids were characterized by their large body size, and the extinction event occurred during the Maastrichtian age. Answer: c) Rebbachisaurids had tooth batteries, and the extinction event occurred approximately 90 million years ago. |
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