Biceratopsinae

{{Short description|Extinct subfamily of trilobites}}

{{Automatic taxobox

| taxon = Biceratopsinae

| fossil_range = Toyonian (Upper Olenellus-zone) {{Geological range|516|513}}

| image = Emigrantia sp.jpg

| image_caption = Emigrantia sp., a cephalon

| authority = (Pack & Gayle, 1971){{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://invitestock.free.fr/Cambrien/pdf/Spanish%20fauna/Cladistic%20Analysis%20of%20the%20Early%20Cambrian%20Olenelloid%20Trilobites.pdf}}

| subdivision_ranks = Genera

| subdivision =

• Biceratops Pack & Gayle, 1971 (Type)
• Bolbolenellus Palmer and Repina, 1993
• Emigrantia nomen nudum
• Eopeachella Webster, 2009
• Nephrolenellus Palmer and Repina, 1993{{cite journal|first= Webster|last= M.|year= 2007|title= Ontogeny and evolution of the early Cambrian trilobite genus Nephrolenellus (Olenelloidea)|journal= Journal of Paleontology|volume= 81|issue= 6|pages= 1168–1193|url=http://jpaleontol.geoscienceworld.org/cgi/content/full/81/6/1168|doi=10.1666/06-092.1|bibcode= 2007JPal...81.1168W|s2cid= 85652241|url-access= subscription}}
• Olenelloides (Peach, 1894)
• Paranephrolenellus Webster, 2007{{cite journal|last1= Webster|first1= M.|year= 2007|title= Paranephrolenellus, a New Genus of Early Cambrian Olenelloid Trilobite|journal= Memoirs of the Association of Australasian Palaeontologists|volume= 34|pages= 101–130}}
• Peachella (Walcott, 1910)

}}

The Biceratopsinae is an extinct subfamily of redlichiid trilobites within the family Biceratopsidae, with species of small to average size. Species belonging to this subfamily lived during the Toyonian stage (Upper Olenellus-zone), 516-513 million years ago, in the former continent of Laurentia, including what are today the South-Western United States and Canada.{{cite news|last1= Pack|first1= P.D.|last2= Gayle|first2= H.B.|year= 2009|title= A New Olenellid Trilobite, Biceratops nevadensis, from the Lower Cambrian near Las Vegas, Nevada|journal= Journal of Paleontology|volume= 45|issue= 5|pages= 893–898}}