Suvarna Garge (Editor)

Petalodontiformes

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Kingdom
  
Rank
  
Order

Phylum
  
Chordata

Subclass
  
Petalodontiformes httpssmediacacheak0pinimgcom736x04db11

Similar
  
Belantsea, Petalodus, Holocephali, Janassa, Iniopterygiformes

Petalodontiformes ("thin-plate teeth") is an extinct order 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.

The two best known species are Belantsea montana, of Carboniferous Bear Gulch, Montana, and Janassa bituminosa, of Permian Europe, as whole fossil specimens have been found of these two.

References

Petalodontiformes Wikipedia