单词	infraorder
释义	infraorder /ˈɪnfrəˌɔːdə / noun Biology A taxonomic category that ranks below a suborder.Glaessner employed the classification scheme of Moore and McConnick that included 66 families of fossil and extant decapods arrayed in 18 superfamilies, 8 infraorders, and 2 suborders.... A large clade composed of taxa from the infraorders Anomura, Thalassinidea, and Brachyura is defined at node 54. Our analysis places them as a basal clade in the infraorder based on a cervical groove that does not cross the midline of the carapace and the loss of the fractosternate condition.
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