L'ordine comprendeva le seguenti famiglie e generi estinti:<ref>Shoshani, Jeheskel; Pascal Tassy (2005). ["Advances in proboscidean taxonomy & classification, anatomy & physiology, and ecology & behavior" https://www.sciencedirect.com/science/article/abs/pii/S1040618204000734?via%3Dihub]. Quaternary International. 126–128: 5–20.</ref><ref>{{citeCita journalpubblicazione|doi=10.1080/14772019.2016.1208687|titletitolo=Morphological and ecological diversity of Amebelodontidae (Proboscidea, Mammalia) revealed by a Miocene fossil accumulation of an upper-tuskless proboscidean|journalrivista=Journal of Systematic Palaeontology|volume=15|issuenumero=8|pagespp=601–615|yearanno=2017|last1cognome1=Wang|first1nome1=Shi-Qi|last2cognome2=Deng|first2nome2=Tao|last3cognome3=Ye|first3nome3=Jie|last4cognome4=He|first4nome4=Wen|last5cognome5=Chen|first5nome5=Shan-Qin}}</ref><ref name="Mothé et al 2016">{{citeCita journalpubblicazione|lastcognome=Mothé|firstnome=Dimila|last2cognome2=Ferretti|first2nome2=Marco P.|last3cognome3=Avilla|first3nome3=Leonardo S.|titletitolo=The Dance of Tusks: Rediscovery of Lower Incisors in the Pan-American Proboscidean Cuvieronius hyodon Revises Incisor Evolution in Elephantimorpha|journalrivista=PLOS One|volume=11|pagespp=e0147009|datedata=12 Januarygennaio 2016|doi=10.1371/journal.pone.0147009|pmid=26756209|pmc=4710528}}</ref><ref>{{citeCita journalpubblicazione|doi=10.1017/jpa.2019.98|titletitolo=Filling a gap in the proboscidean fossil record: a new genus from the Lutetian of Senegal|journalrivista=Journal of Paleontology|yearanno=2019|last1cognome1=Tabuce|first1nome1=Rodolphe|last2cognome2=Sarr|first2nome2=Raphaël|last3cognome3=Adnet|first3nome3=Sylvain|last4cognome4=Lebrun|first4nome4=Renaud|last5cognome5=Lihoreau|first5nome5=Fabrice|last6cognome6=Martin|first6nome6=Jeremy|last7cognome7=Sambou|first7nome7=Bernard|last8cognome8=Thiam|first8nome8=Mustapha|last9cognome9=Hautier|first9nome9=Lionel}}</ref>
