’Symmetrodontans’

DESCRIBER    Owen, 1854
TIME    Cretaceous Early
Berriasian Valanginian
CLADE    Trechnotheria
CLASS    Mammalia
ORDER    Incertae Sedis
FAMILY    Spalacotheriidae
FOSSILSITE    Purbeck Limestone Group, Durlston Bay; Sunnydown Farm, England, Britain
Wadhurst Formation, Tighe Farm, England, Britain
INFO

Spalacotherium tricuspidens (Owen, 1854) [including Peralestes longirostris] > Spalacotherium evansae (Ensom & Sigogneau-Russell, 2000) > Spalacotherium henkeli (Krebs, 1985) > Spalacotherium taylori (Clemens & van Lees, 1971) > Spalacotherium sp.

Based on dentary and most of the dentition.