What is the longest time an animal species has been presumed extinct?
Question
#119850. Asked by jimmycarlos. (Jan 09 11 6:17 PM)
serpa
Here's my choice.
Monoplacophora, a class of molluscs believed to have gone extinct in the middle Devonian Period (c. 380 million years ago) until living members were discovered in deep water off Costa Rica in 1952.
While many species of animals waver over the lines of endangerment, some fall too far past saving and ultimately find themselves extinct. See what you know about these animals that cease to exist on our planet. Good luck!
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