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Graptolites: The Colonial Architects of the Paleozoic Oceans Graptolites are a fascinating group of colonial animals that once dominated the marine ecosystems of the early Paleozoic era. ...
Read Graptolites: The Colonial Architects of the Paleozoic OceansAnaspida: The Shieldless Jawless Fish of the Paleozoic In the ancient oceans of the Paleozoic era, a unique group of vertebrates navigated the waters without the heavy armor typical of th...
Read Anaspida: The Shieldless Jawless Fish of the PaleozoicPteraspidomorphs: The Armored Jawless Fish of the Paleozoic Long before the rise of modern fish, the ancient oceans were inhabited by the Pteraspidomorphs. These extinct creatures represe...
Read Pteraspidomorphs: The Armored Jawless Fish of the PaleozoicPhanerozoic Eon: The Era of Visible Life The Phanerozoic is the current geologic eon, spanning from approximately 538.8 million years ago to the present day. Its name, coined in 1930 by g...
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