Trilobite, Megistaspidella isvositea, from the Middle Ordovician Period of the Paleozoic Era

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Photo credit: © Martin Shields / Alamy / Afripics
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Keywords: ancient, animal, animalia, arthropod, arthropoda, arthropods, beige, bizarre, brown, early, era, extinct, fossil, fossilized, invertebrate, invertebrates, isvositea, marine, megistaspidella, middle, ordovician, paleozoic, period, primitive, strange, trilobita, trilobite, trilobites, yellow