1. ^{{cite book|last= Moore|first= R.C.|year= 1959|title= Arthropoda I - Arthropoda General Features, Proarthropoda, Euarthropoda General Features, Trilobitomorpha|publisher= Geological Society of America/University of Kansas Press|series= Treatise on Invertebrate Paleontology|volume= Part O.|pages=1-560|location= Boulder, Colorado/Lawrence, Kansas|isbn= 0-8137-3015-5}}
2. ^Whittington, H. B. et al. Part O, Treatise on Invertebrate Paleontology. Revised, Volume 1 – Trilobita – Introduction, Order Agnostida, Order Redlichiida. 1997
3. ^{{cite journal|last1= Ramskjöld|first1= L.|last2= Werdelin|first2= L.|year= 1991|title= The phylogeny and evolution of some phacopid trilobites|journal= Cladistics|volume= 7|issue= |pages= 29–74|doi=10.1111/j.1096-0031.1991.tb00021.x}}
4. ^{{cite book|first1= K.C.|last1= von Leonard|first2= H.G.|last2= Bronn|year= 1836|title= Neues Jahrbuch für Mineralogie, Geolognosie, Paläontologie und Petrefactenkunde|publisher= E. Schweizerbart|url= https://books.google.nl/books?id=6RI4AAAAMAAJ&dq=minor+Boeck+1827&hl=nl&source=gbs_navlinks_s}}