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The Ordovician period also saw the advent of more active suspension feeders, like the giant, filter-feeding anomalocarid Aegirocassis.
奥陶纪时期还出现了更活跃的悬浮式捕食者,例如巨大的滤食性奇虾 Aegirocassis。
Anomalocarida is an extinct clade of stem-group arthropods. Some of the most famous genera are Anomalocaris and Peytoia.
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