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| Extant Holocephali |
| Hydrolagus colliei |
| Chimaera phantasma |
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J-elasmo | FUM IO NAKAGAWA | ||
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| Discussion |
| Test M |
| Test C |
| Fossil Shark Assemblages | ||
 Cretaceous |
Ashizawa |  |
 Eocene |
Kawamagari |  |
 Oligocene |
Shiramizu |  |
| Ashiya |  |
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| Ashiya II |  |
|
 Miocene |
Ichisi |  |
| Senhata |  |
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| Aoso |  |
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| Haratajino |  |
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| Kuzubukuro |  |
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 Pliocene |
Naarai |  |
| Okinawa |  |
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| Tomioka |  |
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| Kakegawa |  |
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| Toyooka |  |
|
 Pleistocene |
Ichijyuku |  |
| Fossil Rays & Holocephali |
| Rays I |
| Rays II |
| Holocephali |
