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They became extinct in the mass extinction at the end of the Ordovician Period.
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∙ 11y ago
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When did dinosuars go extinct?
65 Million years ago, in the Cretaceous time period.
What period in which the last ammonites became extinct?
Ammonites went extinct at the end of the Cretaceous Period.
What is a sentence with the word extinct?
Why did the dinosaurs go extinct? Humans will never go extinct!
Relationship between extinct and mass extinction?
Mass extinction is when many animals go extinct within a short period of time caused by the same variables/factors leading to the mass extinction.
When did the pteraspidomorphi go extinct?
Like Rhamphorhynchus and Anurognathus, Pterodactylus became extinct at the end of the Jurassic Period, making room for larger pterosaurs like Ornithocheirus.
Is Argentavis magnificens extinct?
Yes, Argentavis magnificens went extinct in the late Miocene period.
Why did brachiopods go extinct?
Most brachiopods became extinct about 250 million years ago during the P-T Extinction period. Modern day brachiopods do still exist in the form of lingula.
Why did Missouri go extinct?
Missouri is a state - it is not a living thing so it cannot go extinct.
Was Mount Vesuvius extinct?
No, people just think that it was extinct because it had not erupted in a long period of time.
When was the allosaurus born and extinct?
During the Jurassic period.
What extinct cephalopod evolved in the Silurian period?
Ammonite
When did proboscis monkeys go extinct?
they are not extinct yet.
