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Aleosteus
''Aleosteus eganensis'' is an extinct arthrodire placoderm fish. Its fossils have been found in the Late Emsian strate of the Sevy Dolomite Formation, in the Egan Range of east-central Nevada, USA. Almost complete fossils belong to juvenile and adult specimens and show a short and broad skull, posteriorly concave. == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Aleosteus」の詳細全文を読む
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