(Of a lineage or taxon) one that is inherited from the common ancestor of a clade (or clade group) and has undergone little change since.
1 He says the remains show a mix of modern and primitive features .
2 Probably represents incredibly advanced evolution of radiata without loss of certain primitive features .
3 Yet Sennelager was absolutely devoid of the most primitive features of a safe sanitary system.
4 In fact, our guest thinks that modern humans have kept a lot of primitive features from our distant ancestors.
5 Instead, they have several primitive features , some of which look like the older species H. erectus, while some look more like Neanderthals.
6 The skull, dubbed Rhodesian Man when it was discovered, possesses primitive features such as a large face, flat forehead and huge brow ridges.
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