Class Trilobita Rank Subfamily | ||
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Similar Mesonacis, Fritzolenellus, Olenelloidea, Nephrolenellus, Olenellidae | ||
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.
References
Mesonacinae Wikipedia(Text) CC BY-SA