Original sentence: Youngina may be related to Acerosodontosaurus and to the tangasaurids (Kenyasaurus, Hovasaurus, Thadeosaurus, and Tangasaurus), but the phylogeny of younginiform reptiles has not yet been undertaken in any depth, and the group may well not even be monophyletic
Edited sentence: Youngina may be closely related to Acerosodontosaurus, and more distantly to tangasaurids (Kenyasaurus, Hovasaurus, Thadeosaurus, and Tangasaurus), but the phylogeny of younginiform reptiles has not yet been undertaken in any depth, and the group may well not even be monophyletic