doi:10.7203/sjp.31.2.17158engMoreno-Azanza, MiguelGasca, José ManuelDíaz-Martínez, I.Bauluz Lázaro, B.Fernández, ArturoCanudo Sanagustín, José IgnacioPérez-Lorente, FélixA multi-ootaxic assemblage from the Lower Cretaceous of the Cameros Basin (La Rioja; Northern Spain)ART-2016-97694Here we describe the new fossil site of El Horcajo in the vicinity of Trevijano (La Rioja, Spain). It is located in the palustrine facies of the Enciso Group (Cameros Basin). This new locality has provided dozens of eggshell fragments, together with other vertebrate remains and charophyte fructifications, which allow dating of the locality as Valanginian-Hauterivian. Five ootaxa have being recognized: 1) the Spheroolithidae Guegoolithus turolensis; 2) a surprisingly thick Prismatoolithidae indet., with certain affinities to the oogenus Sankofa, that may represent a new oogenus and oospecies for this oofamily; 3) the Krokolithidae2016http://zaguan.unizar.es/record/5856510.7203/sjp.31.2.17158http://zaguan.unizar.es/record/58565oai:zaguan.unizar.es:58565info:eu-repo/grantAgreement/ES/MINECO/CGL2013-46169-C2-1-Pinfo:eu-repo/grantAgreement/ES/MINECO/CGL2014-53548-PSpanish Journal of Palaeontology 31, 2 (2016), 305-320by-nchttp://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccess