Skull of "Echinodon becklesii" from the Lower Cretaceous Purbeck Formation of England. Skull reconstruction in left lateral view. Dashed lines indicate estimated edges and sutures. Abbreviations: adf- anterior dentary foramen; adi- arched diastema; apmf- anterior premaxillary foramen; be -buccal emargination; cp- coronoid process; d- dentary; d1, 2, 11 dentary tooth 1, 2, 11; fo foramen; j jugal; l lacrimal; m maxilla; m1, 2, 8 maxillary tooth 1, 2, 8; pd predentary; pm premaxilla; pm1, 3 premaxillary tooth 1, 3.