File:Protorosaurus Speneri.jpgMartin Sander (2009): A redescription of the early archosauromorph Protorosaurus speneri MEYER, 1832, and its phylogenetic relationships. Palaeontographica
File:Protorosaurus speneri.jpgDescriptionProtorosaurus speneri.jpg English: Fossil of Protorosaurus, an extinct reptile - Took the photo at Teylers Museum. Español: Fósil de Protorosaurus speneri
File:Protorosaurus speneri detail.jpgDescriptionProtorosaurus speneri detail.jpg Italiano: Fossil Protorosaurus - Took the picture at Teylers Museum, Haarlem Date 14 August 2015, 13:43:08