Mesonacinae Temporal range: Botomian
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Mesonacis vermontanus, late Lower Cambrian, Australia, Courtesy of Sam Gon III. | |
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Subfamily: | Mesonacinae Walcott, 1890
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The Mesonacinae comprise an extinct subfamily of trilobites that lived during the Botomian, found in North-America, Greenland and North-Western Scotland. The two genera in this subfamily are Mesonacis and Mesolenellus.[1]