Cervico-pectoral lateral spine of ?<i>Hylaeosaurus</i> sp. (DLM 537) from the Bückeberg Formation (early Valanginian) of Gronau in Westfalen, northwestern Germany.

<p>A, dorsal view; B, ventral view; C, posterior view; D, anterior view. E, cross-section at a–a′; arrow points anteriorly. White areas in dashed lines: areas with missing substantia compacta; gray line: reconstructed outline. Note that the drawings have been slightly reconstructed to compensate for distortion of the basal part. Abbreviations: db, dorsal bulge; pvc, posteroventral crest; vg, ventral groove. Scale-bar units equal 1 cm.