Youngina (named after John Young (1823–1900)) is an extinct genus of diapsid reptile from the Late Permian Beaufort Group (Tropidostoma-Dicynodon zones)...

Acerosodontosaurus, Hovasaurus, Kenyasaurus, Tangasaurus, Thadeosaurus and Youngina) were historically suggested to be lepidosauromorphs, but were later suggested...

closely related to "Younginiformes" (later, more specifically, emended to Youngina capensis) than to Petrolacosaurus (representing Araeoscelidia). The earliest...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

Youngina...

near the base of the clade Neodiapsida. Younginidae includes the species Youngina capensis from the Late Permian of South Africa and Thadeosaurus colcanapi...

lizard-like in build, and had skulls rather similar to the early diapsid Youngina, except for the beak and a few other features. Later and more advanced...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

pineal foramen (Broom, 1914). Broom coined the term as a new suborder for Youngina. A definition for inclusion in the order is difficult: it is almost easier...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

†Youngina crown‑group...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

Coelurosauravus), tangasaurids (such as Hovasaurus), and younginids (such as Youngina). However, they were not found to be as basal as Petrolacosaurus, one of...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

†Youngina crown‑group...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

†Youngina crown‑group...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

Scymnosaurus Simorhinella Stereosternum Theriognathus Thliptosaurus Trochosaurus Youngina Beaufort Group Aelurosaurus Anomocephalus Basilodon Blattoidealestes Brachyprosopus...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

of the Karoo Supergroup, preceding later discoveries such as Paliguana, Youngina, Palaeagama, and Lacertulus. The skeleton is mostly complete, though missing...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...

†Palaeagama †Saurosternon †Sphodrosaurus †Younginidae Galesphyrus Thadeosaurus Youngina †Tangasauridae Acerosodontosaurus? Hovasaurus Tangasaurus †Weigeltisauridae...