Trilobites became extinct about 250 million years ago, in the Mesozoic Era.
Trilobites are extinct but they were marine animals.
The trilobites went extinct during the mass extinction at the end of the Permian period.
Trilobites have been extinct for a long time; there are none left for us to take care of.
The Trilobites.
Trilobites are extinct marine organisms that are often used to date rocks. They were widespread and diverse in the past, making them a useful tool for understanding the age of rock formations through biostratigraphy. Trilobites existed for over 270 million years before becoming extinct.
Trilobites lived for 280 million years before they became extinct, from the Cambrian to the Permian.
You don't. Trilobites are extinct and are only found as fossils.
If you mean trilobites, they have been extinct for millions of years.
Scientists believe that trilobites reproduced sexually. These prehistoric and extinct creatures were a type of arthropod that probably laid eggs. Trilobites lived about 250 million years ago.
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