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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Apatokephaloides
Avonina
Bifodina
Bucksella
Changshanocephalus
Crusoia
Dorypygella
Dunderbergella
Ellipsostrenua
Hypothetica
Ignotogregatus
Lauzonella
Luxella
Macronoda
Maladia
Minicephalus
Minkella
Paraharpes
Parairvingella
Periommella
Perioura
Promesus
Tatonaspis
Torridella
Triarthroides
Turgicephalus
Varanella
Yohoaspis
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