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Hylaeosaurus, Polacanthus , and the systematics and stratigraphy of Wealden armoured dinosaurs

1993; Cambridge University Press; Volume: 130; Issue: 6 Linguagem: Inglês

10.1017/s0016756800023141

1469-5081

Javier Pereda‐Suberbiola,

Ichthyology and Marine Biology

Abstract Two genera of armoured dinosaurs (Ankylosauria) are present in the Lower Cretaceous Wealden Beds of England. Polacanthus Owencan be distinguished from Hylaeosaurus Mantell on the basis of significant differences in the pectoral girdle, hindlimb and dermal armour. A comprehensive review of the dinosaurs from the Wealden Series of England and contemporary basins of western Europe adds further evidence of a biologicalseparation between Lower Wealden (Hastings Beds, containing Hylaeosaurusarmatus) and Upper Wealden faunas (Wealden Group of the Isle of Wight-containing Polacanthus foxii -and nearly equivalent units in Belgium, France, Germany and Spain).