Podcast
Questions and Answers
True or false:Trilobites were mammals.
True or false:Trilobites were mammals.
False
True or false: Trilobites had simple eyes.
True or false: Trilobites had simple eyes.
False
True or false: The Cambrian explosion saw the emergence of most plant groups we know today.
True or false: The Cambrian explosion saw the emergence of most plant groups we know today.
False
True or false: Trilobites did not vary much in size, shape, or behavior.
True or false: Trilobites did not vary much in size, shape, or behavior.
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True or false: Trilobites had eyes made of quartz.
True or false: Trilobites had eyes made of quartz.
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True or false: Trilobites were immune to environmental changes and predators.
True or false: Trilobites were immune to environmental changes and predators.
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True or false: Trilobite fossils have only been found on one continent.
True or false: Trilobite fossils have only been found on one continent.
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True or false: Trilobites have direct living descendants.
True or false: Trilobites have direct living descendants.
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True or false: Arthropods make up less than 80% of current animal species.
True or false: Arthropods make up less than 80% of current animal species.
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True or false: Trilobites are not important to Earth's history.
True or false: Trilobites are not important to Earth's history.
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Study Notes
- Trilobites were segmented creatures that lived around 500 million years ago
- They were among the earliest animals with complex eyes
- The rise of trilobites was part of the Cambrian explosion, which saw the emergence of most animal groups we know today
- Trilobites varied greatly in size, shape, and behavior, filling many distinct niches over time
- They had compound eyes made of calcite, which allowed them to form sharp images and sense changes in light
- Trilobites were vulnerable to environmental changes and predators, and their diversity dwindled over time
- They left a remarkable fossil record that has been found on every continent
- Trilobites have no direct descendants, but their evolutionary cousins are alive and well
- Arthropods, which include trilobites and their cousins, make up over 80% of current animal species
- Trilobites were an important part of Earth's history and their legacy can still be seen today.
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