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trilobites appeared about 524 million years ago. We found this out by using relative dating (which is comparing the age of two fossils) and the most reliable absolute age (which tells you how old the fossil is by measuring radioactivity. The more radioactivity the older the fossil)

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Related Questions

What era did trilobites show up in?

Paleozioc


When did trilobites become extinct?

Trilobites became extinct about 250 million years ago, in the Mesozoic Era.


How long ago did trilobites live?

Trilobites lived in the Palaeozoic era, between 300 and 500 million years ago.


What subphylum of Arthropoda is completely extinct in present era?

The Trilobites.


What organism covered the ocean floor for much of the Paleozoic Era?

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Are there trilobites in Aruba's volcanic rock?

No. There are two reasons for this.You generally do not find fossils in volcanic rock.Aruba formed after trilobites went extinct.


In which geoligic era did trilobites and sharks coexist 1 Cenozoic 2 mesozoic 3 Paleozoic 4 Precambrian?

precambrian is when all humans and living things and sharks existed of course


What geologic time period was the trilobite fossil associated?

Trilobites were associated with the Paleozoic era, from the Cambrian to the Permian.


What are three types of marine animals that left fossils from the Paleozoic era?

Three types of marine animals in the Paleozoic Era were trilobites, brachiopods, and archaeocyathids.


What time period was the creature trilobite in?

Trilobites originated during the Cambrian era, flourished through the Paleozoic era, declined during the Devonian era, and finally became extinct in the Permean mass extinction event. In total there were live trilobites on the earth for about 290 million years.


When did The Trilobites end?

0.2 - 32 inches


When was The Trilobites created?

The Trilobites was created in 1984.