Nephrolenellus Temporal range: Toyonian (Upper Olenellus-zone)
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juvenile Nephrolenellus multinodus, 9mm, frontal glabellar lobe broken | |
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Genus: | Nephrolenellus Palmer & Repina, 1993
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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.[2]