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Trilobite - Wikipedia One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most successful of all early animals, existing in oceans for almost 270 million years, with over 22,000 species having been described
Cambrian period, Extinction, Arthropod, Facts - Britannica trilobite, any member of a group of extinct fossil arthropods easily recognized by their distinctive three-lobed, three-segmented form Trilobites, exclusively marine animals, first appeared at 521 million years ago near the beginning of the Cambrian Period (538 8 million to 485 4 million years ago), when they dominated the seas
What were trilobites? - Oxford University Museum of Natural History Trilobites are a group of extinct marine arthropods that first appeared around 521 million years ago, shortly after the beginning of the Cambrian period, living through the majority of the Palaeozoic Era, for nearly 300 million years
Trilobite - Description, Habitat, Image, Diet, and Interesting Facts Trilobites first appeared in the fossil record during the Cambrian period, approximately 521 million years ago Their sudden appearance, alongside a burst of evolutionary innovation known as the Cambrian explosion, suggests they were a successful and rapidly diversifying group
How trilobites conquered prehistoric oceans - Natural History Museum Trilobites withstood events that shaped our world for more than 250 million years, enduring continents shifting, ice ages, mass extinctions and the evolution of fierce predators After suddenly appearing in the Cambrian Period, trilobites diverged into thousands of species that lived throughout Earth’s oceans during the Palaeozoic Era
A Guide to the Orders of Trilobites Learn more about trilobite morphology, anatomy, ecology, behavior, reproduction, and development, and how they relate to trilobite origins, evolution, and classification Explore trilobite biostratigraphy, paleobiogeography, persistence across geological time, and their ultimate extinction
Trilobite Website | AMNH Trilobites were among the first dominant multicellular lifeforms to inhabit our planet’s seas The Trilobita, an extinct class of Paleozoic marine arthropods, was made up of 10 orders, over 150 families, about 5,000 genera and over 22,000 described species
Trilobites - Extinct Animal Encyclopedia Trilobites first appeared in the fossil record during the Cambrian Period, around 521 million years ago They are believed to have evolved from earlier, soft-bodied organisms that may resemble modern-day arthropods
Trilobites, Earths Fascinating Prehistoric Arthropods » Geology Science Trilobites are one of the earliest known complex life forms and left behind an extensive fossil record, making them a subject of great interest to paleontologists The name “trilobite” originates from their distinctive body structure, which is divided into three distinct longitudinal lobes
Trilobites: The Most Diverse Fossils in History Explained Trilobites were a remarkably diverse group of marine arthropods that thrived in the oceans for nearly 300 million years Their impressive variety has made trilobite fossils some of the most important for understanding the history of life on Earth