SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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copepods
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barnacles
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horseshoe crabs
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trilobites
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Detailed explanation-1: -Horseshoe crabs are “living fossils” meaning they have existed nearly unchanged for at least 445 million years, well before even dinosaurs existed. Horseshoe crabs are not actually crabs at all, they are much more closely related to spiders and other arachnids than they are to crabs or lobsters!
Detailed explanation-2: -Related to spiders, this prehistoric creature is a horseshoe crab. A living fossil that is important to the food chain, horseshoe crabs (HSC) have been crawling on the planet a couple of hundred million years before dinosaurs.
Detailed explanation-3: -The horseshoe crab species found around the United States (Limulus polyphemus) lives in the Atlantic Ocean along the North American coastline. Horseshoe crabs can also be seen along the East and Gulf coasts of the United States and Mexico.
Detailed explanation-4: -King crab (Arthropoda), sphenodon (Reptilia) and peripatus (an invertebrate) are examples of living fossils.