Blain, Hugues-Alexandre; Bailon, Salvador (April 2019). "Extirpation of Ophisaurus (Anguimorpha, Anguidae) in Western Europe in the context of the disappearance of subtropical ecosystems at the Early-Middle Pleistocene transition". Palaeogeography, Palaeoclimatology, Palaeoecology. 520: 96–113. Bibcode:2019PPP...520...96B. doi:10.1016/j.palaeo.2019.01.023. S2CID135280617.
Klembara, Jozef; Rummel, Michael (January 2018). "New material of Ophisaurus , Anguis and Pseudopus (Squamata, Anguidae, Anguinae) from the Miocene of the Czech Republic and Germany and systematic revision and palaeobiogeography of the Cenozoic Anguinae". Geological Magazine. 155 (1): 20–44. Bibcode:2018GeoM..155...20K. doi:10.1017/S0016756816000753. S2CID132414700.
Blain, Hugues-Alexandre; Bailon, Salvador (April 2019). "Extirpation of Ophisaurus (Anguimorpha, Anguidae) in Western Europe in the context of the disappearance of subtropical ecosystems at the Early-Middle Pleistocene transition". Palaeogeography, Palaeoclimatology, Palaeoecology. 520: 96–113. Bibcode:2019PPP...520...96B. doi:10.1016/j.palaeo.2019.01.023. S2CID135280617.
Klembara, Jozef; Rummel, Michael (January 2018). "New material of Ophisaurus , Anguis and Pseudopus (Squamata, Anguidae, Anguinae) from the Miocene of the Czech Republic and Germany and systematic revision and palaeobiogeography of the Cenozoic Anguinae". Geological Magazine. 155 (1): 20–44. Bibcode:2018GeoM..155...20K. doi:10.1017/S0016756816000753. S2CID132414700.
Blain, Hugues-Alexandre; Bailon, Salvador (April 2019). "Extirpation of Ophisaurus (Anguimorpha, Anguidae) in Western Europe in the context of the disappearance of subtropical ecosystems at the Early-Middle Pleistocene transition". Palaeogeography, Palaeoclimatology, Palaeoecology. 520: 96–113. Bibcode:2019PPP...520...96B. doi:10.1016/j.palaeo.2019.01.023. S2CID135280617.
Klembara, Jozef; Rummel, Michael (January 2018). "New material of Ophisaurus , Anguis and Pseudopus (Squamata, Anguidae, Anguinae) from the Miocene of the Czech Republic and Germany and systematic revision and palaeobiogeography of the Cenozoic Anguinae". Geological Magazine. 155 (1): 20–44. Bibcode:2018GeoM..155...20K. doi:10.1017/S0016756816000753. S2CID132414700.