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Nephrolenellus : ウィキペディア英語版 | Nephrolenellus
''Nephrolenellus'' is an extinct genus of trilobite, fossil marine arthropods, of relatively small size (sagittal length of cephalon rarely exceeds 11 mm). Currently two species are attributed to it. ''Nephrolenellus'' lived at the end of the Lower Cambrian. Species are known from the Great Basin of California, Nevada and Arizona, with one specimen from Canada. == Taxonomy == ''N. geniculatus'' may have been a direct descendant of ''N. multinodus''.〔
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「Nephrolenellus」の詳細全文を読む
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