Clades

n. group of organisms that are classified together as descendants of a common ancestor (Biology)

Cladistics is a philosophy of classification that arranges organisms only by their order of branching in an evolutionary tree and not by their morphological similarity, in the words of Luria et al. (1981). A major contributor to this school of thought was the German entomologist Willi Hennig, who referred to it as phylogenetic systematics (Hennig, 1966). The word cladistics is derived from the ancient Greek , klados, or "branch."
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N F
defeat| reverse; casualties| slaughter/carnage/devastation; ruins; dissolution

a hurdle or wattle.