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Extinct group of armored fishlike vertebrates
Answer for the clue "Extinct group of armored fishlike vertebrates ", 11 letters:
osteostraci
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The class Osteostraci ("Bony Shields") was a group of bony-armored jawless fish, termed " ostracoderms ", that lived in what is now North America, Europe and Russia from the Middle Silurian to Late Devonian . Anatomically speaking, the osteostracans, especially ...