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Bradoriida
Bradoriids are small marine arthropods with a bivalved carapace, and were globally distributed, forming a significant portion of the Cambrian and early Ordovician soft-bodied communities. == Affinity == Whilst the Bradoriida were traditionally considered as relatives of the modern bivalved arthropod group Ostracoda, the anatomy of their appendages does not support such a relationship; neither are they related to the Cambrian bivalved arthropod group Phosphatocopida. Rather, they are most probably related to the Eucrustacea at a stem-group level.〔 An in-depth phylogenetic analysis of Panarthropoda included two bradoriid genera, ''Kunyangella'' and ''Kunmingella'', and recovered them as the most basal stem-mandibulates.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Bradoriida」の詳細全文を読む
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