Mesonacinae

{{Short description|Extinct subfamily of trilobites}} {{Automatic taxobox | fossil_range = {{fossilrange|516|513}}Botomian | image = Mesonacis_vermontanus.jpg | image_upright = 0.8 | image_caption = ''Mesonacis vermontanus'', late Lower Cambrian, Australia, Courtesy of Sam Gon III. | taxon = Mesonacinae | authority = Walcott, 1890 | subdivision_ranks = Genera | subdivision = * ''Mesonacis'' <small>Walcott, 1885</small><ref name='Lieberman 1999'>{{cite journal|last1=Lieberman|first1=B.S.|year=1999|title=Systematic Revision of the Olenelloidea (Trilobita, Cambrian)|journal=Bulletin of the Peabody Museum of Natural History|volume=45|url=http://peabody.yale.edu/sites/default/files/documents/scientific-publications/ypmB45_1999.pdf|access-date=2012-10-30|archive-date=2016-06-24|archive-url=https://web.archive.org/web/20160624111229/http://peabody.yale.edu/sites/default/files/documents/scientific-publications/ypmB45_1999.pdf|url-status=dead}}</ref> * ''Mesolenellus'' <small>(Palmer & Repina, 1993)</small><ref name= 'Palmer&Repina'>{{citation|last1=Palmer|first1=A.R.|last2=Repina|first2=L.N.|year=1993|title=Through a Glass Darkly: Taxonomy, Phylogeny and Biostratigraphy of the Olenellina|journal=The University of Kansas Paleontological Contributions|volume=3|pages=1–35|url=http://kuscholarworks.ku.edu/dspace/handle/1808/3760}}</ref><ref name='Lieberman 1999'/> }}

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''.<ref name='Lieberman 1999'/>

==References== {{Reflist}}

==External links== *[http://www.trilobites.info/galredlichiida.htm ''Photo of M. vermontanus''] *[http://www.trilobites.info ''Trilobite info'']

Category:Olenellidae Category:Cambrian trilobites Category:Cambrian Series 2 first appearances Category:Cambrian Series 2 extinctions Category:Trilobite subfamilies