Ojinaga FormationThe Ojinaga Formation is a Mesozoic geologic formation. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.Vertebrate paleofauna ''Tylosaurus cf. (kansasensis) nepaeolicus''Invertebrate paleofaunaInoceramus sp.Globochaete alpinaFavusella iltermanneHedbergella sp.Sacoccoma sp.Rotalipora sp.Heterohelix sp.Leoblichaella cf. bentonensisClavihedbergella sp.Mammites nodosidesCollignomiceras chispaensePryonocycloceras gabrielensisTexanites stangeriTexanites densicostatusSubmortoniceras tequesquitenseInoceramus undulatuplicatusPlacenticeras planumEutrephoceras dekayiEutrephoceras alcesenseBaculites sp.Exogyra poderosa ''Exogyra erraticostata''