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一种新发现的远古抹香鲸〔转贴〕 Zygophyseter varolai 生存於中新世中期～晚期 6.5-7m 关於Zygophyseter varolai的资料只有这麼多: Zygophyseter varolai, a new genus and species of Physeteroidea (Cetacea, Odontoceti), is based on an almost complete skeleton from the Late Miocene (Tortonian) in southern Italy. The extreme elongation of the zygomatic process of the squamosal and the circular supracranial basin (probably for housing the spermaceti organ) delimited by a peculiar anterior projection of the supraorbital process of the right maxilla are the most distinctive features of this bizarre sperm whale. Large body size, large teeth present in both lower and upper jaw, and anteroposteriorly elongated temporal fossa and zygomatic process of the squamosal indicate that this cetacean (for which we suggest the English common name killer sperm whale) was an active predator adapted to feeding on larg
鼠鲨科大百科 鼠鲨科(Lamnidae)，3属5种，体纺锤形，吻尖，尾叉形。本科为大中型鱼类。我国常见的有灰鲭鲨(Isuru glaucus)，为暖海性上层鱼类。性情凶猛，常追捕鱼群。卵胎生。噬人鲨，即大白鲨（该属仅此一种）(Carcharodon carcharias)体庞大，口大，弧形，牙锐利。性凶猛为大洋性活泼鱼类。吞食大型海洋生物，有袭击小船和噬人的记录。广布于热带和亚热带海区，中国见于海南和东海。
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