When and Why Did Spinosaurus Become Extinct?
Geological Time Period: Spinosaurus roamed the Earth during the Cretaceous period, approximately 112 to 93.5 million years ago. It was one of the largest terrestrial carnivores of its time.
Extinction Event: The Cretaceous-Paleogene extinction event, commonly known as the K-Pg extinction, occurred around 66 million years ago. This catastrophic event resulted in the extinction of approximately 76% of all plant and animal species on Earth, including the Spinosaurus.
Causes of Extinction: The exact cause of the K-Pg extinction is still debated, but scientists widely accept that it was likely triggered by a combination of factors, including:
- Asteroid Impact: The impact of a large asteroid or comet in the Gulf of Mexico may have caused widespread fires, tsunamis, and dust clouds, blocking out the sun and disrupting ecosystems.
- Increased Volcanic Activity: Intense volcanic eruptions in what is now India may have released vast amounts of ash and gases into the atmosphere, further contributing to global climate change.
Other Contributing Factors: In addition to the K-Pg extinction event, other factors may have played a role in the Spinosaurus's decline:
- Habitat Loss: Changing environmental conditions, such as rising sea levels and shrinking coastlines, could have reduced the Spinosaurus's suitable habitat.
- Competition: The emergence of other large carnivores, such as Tyrannosaurus rex, may have competed with Spinosaurus for food and territory.
Timeline of Extinction: While the K-Pg extinction event is estimated to have occurred around 66 million years ago, the exact timing of Spinosaurus's extinction is less clear. Some fossil evidence suggests that the genus may have survived until as late as 60.3 million years ago.
Related Questions:
- What is the scientific name for Spinosaurus? (Spinosaurus aegyptiacus)
- When was Spinosaurus first discovered? (1912)
- What was the distinctive physical feature of Spinosaurus? (Large sail-like structure on its back)
- Where have Spinosaurus fossils been found? (North Africa)
- Is there any evidence that Spinosaurus could swim? (Yes, its tail and feet show adaptations for aquatic locomotion)
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