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Trilobites are
Trilobites are
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Solution
The correct option is A Extinct arthropods
Trilobite are a group of extinct marine arachnomorph arthropods that
form the class Trilobita. Trilobites form
one of the earliest-known groups of arthropods. The first appearance of
trilobites in the fossil record defines the base of the Atdabanian stage
of the Early Cambrian period (600million years ago), and they flourished throughout the lower Paleozoic era
before beginning a drawn-out decline to extinction when, during the Devonian,
all trilobite orders except the Proetids died out. So, the
correct answer is ‘Extinct Arthropods’.
Trilobite are a group of extinct marine arachnomorph arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (600million years ago), and they flourished throughout the lower Paleozoic era before beginning a drawn-out decline to extinction when, during the Devonian, all trilobite orders except the Proetids died out. So, the correct answer is ‘Extinct Arthropods’.
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