Petalodontidae
Appearance
Petalodontidae Temporal range: Lower Carboniferous to Permian
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Family: | †Petalodontidae Newberry & Worthen, 1866
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Petalodontidae is an extinct family of marine cartilaginous fish related to modern day chimaera found in what is now the United States of America and Europe. With a very few exceptions, they are known entirely from teeth. All fossils range from the Carboniferous to the Permian, where they are presumed to have died out during the Permian/Triassic extinction event.