Sentence:  Vrba continues by stating that this '. . . can result in a major reorganization - or "shuffling" of body proportions such that some characters become larger and others smaller, some <WSD>hyperadult</WSD> and others more juvenilized' (1996, p. 1 ). 
Meaning of the word marked with <WSD> tags:  Exhibiting hypermorphosis; Having features that exaggerate adult morphology.