Ptychagnostidae
Ptychagnostidae is a family of agnostid trilobites from the 5th Stage to the Paibian Age of the Cambrian (509 to 497 million years ago). The family includes several important index fossils.
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Ptychagnostidae
Ptychagnostidae is a family of agnostid trilobites from the 5th Stage to the Paibian Age of the Cambrian (509 to 497 million years ago). The family includes several important index fossils.
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Ptychagnostidae is a family of ...... veral important index fossils.
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37,674,310
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1,020,449,296
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authority
Kobayashi, 1939
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image
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image2 caption
Ptychagnostus cuyanus
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image caption
Ptychagnostus gibbus
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subdivision
See text
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subdivision ranks
Genera
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taxon
Ptychagnostidae
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type genus
Ptychagnostus
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type genus authority
Jaekel, 1909
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hypernym
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Ptychagnostidae is a family of ...... veral important index fossils.
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label
Ptychagnostidae
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