| Castrillo de la Reina Formation | |
|---|---|
| Stratigraphic range: late Barremian-early Aptian ~ | |
| Type | Geological formation |
| Unit of | Oliván Group |
| Underlies | Utrillas & Escucha Formations |
| Overlies | Hortigüela & Leza Formations |
| Lithology | |
| Primary | Claystone |
| Other | Sandstone |
| Location | |
| Coordinates | 42°00′N 3°18′W / 42.0°N 3.3°W |
| Approximate paleocoordinates | 32°36′N 8°12′E / 32.6°N 8.2°E |
| Region | Castile and León |
| Country |  Spain |
| Extent | Cameros Basin |
  Castrillo de la Reina Formation (Spain) | |
The Castrillo de la Reina Formation is a geological formation in Spain. It is late Barremian to early Aptian in age. It interpreted as a fluvial deposit. It primarily consists of red clay, with ribbon shaped sandstone channel fills. The rebbachisaurid dinosaur Demandasaurus occurs in the formation,[1] alongside somphospondylan Europatitan[2] as well as indeterminate small ornithopods, iguanodonts (including members of the Hadrosauriformes[3]) and spinosaurids, the earliest known stem-rhabdodontid (indeterminate)[4] and the lizard Arcanosaurus.[5]
- ^ Fernández-Baldor, Fidel Torcida; Canudo, José Ignacio; Huerta, Pedro; Montero, Diego; Suberbiola, Xabier Pereda; Salgado, Leonardo (September 2011). "Demandasaurus darwini, a New Rebbachisaurid Sauropod from the Early Cretaceous of the Iberian Peninsula". Acta Palaeontologica Polonica. 56 (3): 535–552. doi:10.4202/app.2010.0003. ISSN 0567-7920.
- ^ Torcida Fernández-Baldor, Fidel; Canudo, José Ignacio; Huerta, Pedro; Moreno-Azanza, Miguel; Montero, Diego (2017-06-27). "Europatitan eastwoodi, a new sauropod from the lower Cretaceous of Iberia in the initial radiation of somphospondylans in Laurasia". PeerJ. 5: e3409. doi:10.7717/peerj.3409. ISSN 2167-8359. PMC 5490465. PMID 28674644.
- ^ Escanero-Aguilar, D.; Torcida Fernández-Baldor, F.; Pereda-Suberbiola, X.; Huerta, P. (2024-04-03). "Skull material of an early cretaceous hadrosauriform dinosaur (Ornithopoda) from Salas de los Infantes (Burgos, Spain)". Journal of Iberian Geology. 50 (1): 67–82. Bibcode:2024JIbG...50...67E. doi:10.1007/s41513-023-00227-5. ISSN 1698-6180.
- ^ Dieudonné, Paul-Emile; Tortosa, Thierry; Torcida Fernández-Baldor, Fidel; Canudo, José Ignacio; Díaz-Martínez, Ignacio (2016-06-22). Farke, Andrew A. (ed.). "An Unexpected Early Rhabdodontid from Europe (Lower Cretaceous of Salas de los Infantes, Burgos Province, Spain) and a Re-Examination of Basal Iguanodontian Relationships". PLOS ONE. 11 (6): e0156251. Bibcode:2016PLoSO..1156251D. doi:10.1371/journal.pone.0156251. ISSN 1932-6203. PMC 4917257. PMID 27333279.
- ^ Houssaye, Alexandra; Rage, Jean-Claude; Torcida Fernández-Baldor, Fidel; Huerta, Pedro; Bardet, Nathalie; Pereda Suberbiola, Xabier (April 2013). "A new varanoid squamate from the Early Cretaceous (Barremian–Aptian) of Burgos, Spain". Cretaceous Research. 41: 127–135. Bibcode:2013CrRes..41..127H. doi:10.1016/j.cretres.2012.11.005.