Thecodontosaurus
Modern cladistic work has not been conclusive. Thecodontosaurus was earlier put under the Prosauropoda. More recently was suggested that Thecodontosaurus and its relatives came before the prosauropod-sauropod split. Thecodontosaurus is in a basal position among the sauropodomorph dinosaurs. New reconstructions show that its neck is proportionally shorter than those in more 'advanced' sauropodomorphs.