Gregoriidae
Gregoriidae is an extinct family of early sharks from the Carboniferous period. It currently includes three described genera: , , and Bealbonn. This family includes remains formerly ascribed to "Desmiodus," which is now considered a nomen vanum. The relationships between the included genera are not entirely clear. Fossils are known from Serpukhovian-aged formations including the Bear Gulch Limestone and Surprise Canyon Formation.
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Gregoriidae
Gregoriidae is an extinct family of early sharks from the Carboniferous period. It currently includes three described genera: , , and Bealbonn. This family includes remains formerly ascribed to "Desmiodus," which is now considered a nomen vanum. The relationships between the included genera are not entirely clear. Fossils are known from Serpukhovian-aged formations including the Bear Gulch Limestone and Surprise Canyon Formation.
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Gregoriidae is an extinct fami ...... and Surprise Canyon Formation.
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65,550,047
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Gregoriidae
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image caption
Srianta cf. S. srianta from the Surprise Canyon formation
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infraclassis
Paraselachii
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Gregoriidae
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phylum
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Euchondrocephali
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subdivision
*Gregorius
*Srianta
*Bealbonn
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Genera
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Gregoriidae is an extinct fami ...... and Surprise Canyon Formation.
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Gregoriidae
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Gregoriidae
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