La Casita Formation

The La Casita Formation is a geologic formation in Mexico. It preserves fossils dating back to the Kimmeridgian to lowermost Berriasian. It is laterally equivalent to the La Caja Formation and the Pimienta Formation. The ichthyosaur "Acuetzpalin" is known from the formation, as well as the metriorhynchid "Dakosaurus" and indeterminate pliosaurs.