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  Trilobites are extinct marine arthropods with an exoskeleton that is made of chitin. The name trilobite comes from Latin, meaning three parts of the body. Paleontologists believe that these creatures lived millions of years ago before they disappeared along with other ancient animals. Once lived under the ocean, trilobites now appear as fossils in coastal rocks. Here are fantastic facts about trilobites. Appearance These creatures are a diverse class of animals on the earth since they look like somewhere between crab and bug that can live in the ocean. They are very popular among fossil hunters because of their distinctive features: a left pleural lobe, a middle axial lobe, and a right pleural lobe. Their bodies had thick exoskeletons like a cockroach and three different sections: cephalon, the head part, thorax, the middle area, and pygidium, the tail. Unlike other bugs, trilobites had legs, gills, and antennas, making them rare among marine beings. Long lifespan Fossil studies show

  Before the existence of the elephant, there were other elephant-liked animals in the prehistoric era. Among other giants in that time, mastodons were magnificent animals used to roam around North America and Europe about two million years ago. Unlike dinosaurs that are popular in art and literature, not many people know about mastodon. When comparing mastodon with popular ancient animals, they came late in the Pleistocene epoch. If you want to explore the beauty of this animal, continue reading to find out interesting facts about it. Appearance The name mastodon is derived from the term nipple tooth, the shape of its molar teeth. The animal looked like somewhere between the modern-day elephant and wooly mammoth, another extinct animal that lived in the ice age. To avoid confusion with mammoth, keep in mind that mastodon stood at shorter legs and stalwart body. However, both creatures had a long thick fur coat and pachyderm skin all over their bodies. According to fossil remains, male