The contemporary species Dicynodon amalitzkii Sushkin, 1926 is closely related (Angielczyk and Kurkin 2003a, 2003b), although according to Lucas 2005, Dicynodon trautscholdi, Dicynodon amalitzkii, Elph borealis, and Vivaxosaurus permirus are all synonyms, which makes D. amalitzkii the junior synonym of D. trautscholdi.
Petr Nečas | Petr Sgall | Petr Ruman | Petr Pravec | Petr Petrovich Sushkin | Petr Nedvěd | Petr Nárožný | Petr Ginz | Petr Bezruč | Ivan Petrovich Liprandi | Duke Alexander Petrovich of Oldenburg | Dmitry Petrovich Maksutov | Abram Petrovich Gannibal | Vladislav Petrovich Vinogradov | Petr Vorobiev | Petr Skrabanek | Petr Průcha | Petr Nedved | Petr Janda | Petr Ivanovich Panin | Petr Hrdlička | Petr Herel | Petr Drobisz | Petr Čech | Petr Brandl | Petr Beckmann | Nikolay Petrovich Fyodorov | Iván Petrovich | Ivan Petrovich | Fyodor Petrovich Komissarzhevsky |