单词	cephalon
释义	cephalon /ˈsɛfəlɒn / /ˈkɛfəlɒn/ noun Zoology (In some arthropods, especially trilobites) the region of the head, composed of fused segments.This problem is reflected in the ongoing uncertainty about the number of biramous appendages in the trilobite cephalon.... This specimen cannot be specifically identified because it lacks the cephalon and first thoracic segment. Members of the Agnostina have only two segments between the cephalon and pygidium, and never have cephalic sutures. Origin Late 19th century: from Greek kephalē 'head'.
随便看	Ashdod Ashdown, Sir Paddy Ashe, Arthur ashen ashen-faced Asher ashet Asheville Ashgabat (as) high as a kite ashine a shingle short A-shirt Ashkelon Ashkenazi Ashkenazic Ashkenazy, Vladimir ash key Ashkhabad Ashland ashlar ashlaring Ashley, Laura ashling Ashmolean Museum

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