Wealden Group
The Wealden group consists of paralic to continental (freshwater) facies sedimentary rocks of Berriasian to Aptian age and thus forms part of the English Lower Cretaceous.It is not found in northwest England and Wales, areas which were at the time tectonic highs where no deposition took place.In Yorkshire, the equivalently aged Speeton Clay Formation, a marine unit, is present.[3] The Wealden Group forms outcrops covering a large part of south and south-eastern England including the Isle of Wight.[4] Apart from fossils, it shows many other signs of being deposited in a continental environment, such as mudcracks and -in some rare cases- dinosaur footprints.
Stratigraphic rangeBerriasianAptianPreꞒBexhill-on-SeaWeald BasinWeald Clay FormationTunbridge Wells Sand FormationWadhurst Clay FormationAshdown FormationWessex BasinVectis FormationWessex FormationWhitchurch Sand FormationLower Greensand GroupPurbeck GroupEnglandrock stratalithostratigraphycontinentalfaciessedimentary rocksLower Cretaceousflood plainbraided riverslagoonalcoastal plainbasinsCleveland Basintectonic highsLondon PlatformstratigraphicallyJurassicCretaceousformationsOxfordshireBuckinghamshireWiltshireoutlierSpeeton Clay FormationeustatictransgressionAlbianoutcropsIsle of WightSussexSurreyHampshiredinosaursIguanodonHypsilophodonmudcracksPterosaursColoborhynchusornithocheiridThecospondylusTherosaurusAltispinaxHaestasaurusmacronarianPleurocoelusTuriasauriaTheropodaXenoposeidonrebbachisauridsauropodBückeberg FormationSainte-Barbe Clays FormationBibcodeBritish Geological SurveyUniversity of CaliforniaList of dinosaur-bearing rock formations