Fortunodon trautscholdi was named by Kurkin (2012). It is not extant. Its type specimen is PIN 2005/1, a skull. It is the type species of Fortunodon.
Vivaxosaurus permirus was named by Kalandadze and Kurkin (2000). Its type specimen is PIN, no. 1536/1, a skull, and it is a 3D body fossil. Its type locality is Berezhane, PIN 1536, which is in a Vyatkian terrestrial claystone/sandstone in the Russian Federation. It is the type species of Vivaxosaurus.
It was synonymized subjectively with Vivaxosaurus trautscholdi by Kammerer et al. (2011).
Dicynodon trautscholdi was named by Amalitzky (1922). Its type specimen is PIN 2005/1, a skull, and it is a 3D body fossil. Its type locality is Sokolki locality, PIN 2005, which is in a Severodvinian/Vyatkian terrestrial horizon in the Salarevo Formation of the Russian Federation.
It was recombined as Vivaxosaurus trautscholdi by Kammerer et al. (2011); it was replaced with Fortunodon trautscholdi by Kurkin (2012).
Gordonia annae was named by Amalitzky (1922). Its type specimen is PIN 2005/5, a skull, and it is a 3D body fossil. Its type locality is Sokolki locality, PIN 2005, which is in a Severodvinian/Vyatkian terrestrial horizon in the Salarevo Formation of the Russian Federation.
It was recombined as Dicynodon annae by Sushkin (1926); it was synonymized subjectively with Dicynodon trautscholdi by Efremov (1940), Battail and Surkov (2000), Ivakhnenko (2003) and Ivakhnenko (2008).
Gordonia rossica was named by Amalitzky (1922). Its type specimen is PIN 2005/3, a partial skull, and it is a 3D body fossil. Its type locality is Sokolki locality, PIN 2005, which is in a Severodvinian/Vyatkian terrestrial horizon in the Salarevo Formation of the Russian Federation.
It was recombined as Dicynodon rossicus by von Huene (1940); it was synonymized subjectively with Dicynodon trautscholdi by Sushkin (1926), Battail and Surkov (2000), Ivakhnenko (2003) and Ivakhnenko (2008).
Oudenodon venyukovi was named by Amalitzky (1922). Its type specimen is PIN 2005/6, a partial skull, and it is a 3D body fossil. Its type locality is Sokolki locality, PIN 2005, which is in a Severodvinian/Vyatkian terrestrial horizon in the Salarevo Formation of the Russian Federation.
It was synonymized subjectively with Dicynodon annae by Sushkin (1926); it was synonymized subjectively with Dicynodon trautscholdi by Battail and Surkov (2000), Ivakhnenko (2003) and Ivakhnenko (2008).