ecofactbook
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species
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Animalia
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Arthropoda
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Trilobita
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Ptychopariida
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Ptychopariidae
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Ptychoparella
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Ptychoparella buttsi
Ptychoparella gaspensis
Ptychoparella georgiensis
Ptychoparella lancastra
Ptychoparella michaeli
Ptychoparella minor
Ptychoparella murphyi
Ptychoparella prolifica
Ptychoparella swantonensis
Ptychoparella taylori
Ptychoparella vermontensis
Ptychoparella walcotti
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