Calizas de Lychnus Formation
Introduction The '''Calizas de Lychnus Formation''' is a Maastrichtian geologic formation in northern central Spain. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.
Fossil content === Dinosaurs ===* ''cf. Euronychodon sp. ''* ''cf. Paranoychodon sp.'' (?Troodontidae indet. )* ''?Hypselosaurus sp. ''* Nodosauridae indet. * Rhabdodontidae indet. * Titanosauridae indet. * Dinosauria indet. * Sauropoda indet. * ?Dromaeosauridae indet. ;Invertebrates* ''Bithynella sp. ''* ''Physa cf. patula'';Fish* Actinopterygii indet. ;Other reptiles* ''Acynodon lopezi''* Crocodylia indet. * Eusuchia indet. * Testudines indet. ;Mammals* ''Labes quintanillensis''* ?Palaeoryctidae indet. ;Flora* ''Typha sp. ''* Arecaceae indet. * Charophyta indet.
See also * List of dinosaur-bearing rock formations** List of stratigraphic units with few dinosaur genera
References === Bibliography ===* Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds. ): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. * C. Pol, A. D. Buscalioni, J. Carballeira, V. Francés, N. López Martínez, B. Marandat, J. J. Moratalla, J. L. Sanz, B. Sigé and J. Villatte. 1992.Reptiles and mammals from the Late Cretaceous new locality Quintanilla del Coco (Burgos Province, Spain). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 184(3):279-314* J. L. Sanz, A. D. Buscalioni, J. J. Moratalla, V. Francés, and M. Antón. 1990.Los reptiles Mesozoicos del registro español The Mesozoic reptiles from the Spanish record. Monografias del Museo Nacional de Ciencias Naturales 2:1-79