Comments

Morphology of the jugal articulation surface of the maxilla. State 3: dorsally elevated jugal joint (distance between the ventral margin of the jugal joint and ectopterygoid shelf nearly equal to depth of the caudal segment of the maxilla), caudal margin of the joint flush with the caudal margin of the rostrodorsal eminence of the lateral side of the maxilla Exemplified here in a specimen of Tsintaosaurus spinorhinus (IVPP V725) in A, lateral and B, dorsal view. C, Pararhabdodon isonensis (IPS SRA 22), lateral view.

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