| Petalodontiformes | |
|---|---|
 | |
| Belantsea montana | |
 | |
| Janassa bituminosa | |
Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Holocephali |
| Order: | †Petalodontiformes Zangerl, 1981 |
| Families | |
Petalodontiformes ("thin-plate teeth") is an extinctorder of marinecartilaginous fish related to modern daychimaera found in what is now theUnited States of America andEurope.[1]
Most species are known only from isolated teeth.[1][2] All fossils range from theCarboniferous to thePermian, where they are presumed to have died out during the Permian/Triassic extinction event.[1]
The two best known species areBelantsea montana, from the CarboniferousBear Gulch,Montana, andJanassa bituminosa, from theupper Permian of Europe, as whole fossil specimens have been found of these two.
| Forerunners | 
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| Jawless fish |
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| Jawed fish |
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| Related | |||||||||||||
† extinct | |||||||||||||
 | This article about aprehistoriccartilaginous fish is astub. You can help Wikipedia byadding missing information. |
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