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来自维基百科,自由的百科全书
希波爾箭石(學名:Hibolithes),又名希波箭石,是生存在中侏羅紀至早白堊紀海洋中的一屬箭石。其化石分布於格陵蘭、匈牙利、紐西蘭和南極洲等地。[1]牠們的鞘細長,結構精巧,後端為鱗莖狀且脆弱。腹面的前緣長有突出狹窄的凹槽,突出部很脆弱,在化石化的過程中容易碎裂。[2]
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