Ashville Formation  The Ashville Formation is a geological formation in Saskatchewan and Manitoba whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. It is geochronologically equivalent to the Lower Colorado Group and the Viking Formation in central Alberta. Pasquiaornis hardiei - "Hindlimb elements." Pasquiaornis tankei - "Hindlimb elements and quadrate."