Morphological variation in small theropods and its meaning in systematics: evidence from Syntarsus rhodesiensis - 1990
Morphometric landmarks of pachycephalosaurid cranial material from the Judith River Formation of northcentral Montana - 1990
Morphometric study of Plateosaurus from Trossingen (Baden-Württemberg, Federal Republic of Germany) - 1990
On the status of the ceratopsids Monoclonius and Centrosaurus - 1990
Species determination in sauropod dinosaurs with tentative suggestions for their classification - 1990
Stegosaurs of Asia - 1990
The ceratopsian subfamily Chasmosaurinae: sexual dimorphism and systematics - 1990
Triceratops: an example of flawed systematics - 1990
Variation in Coelophysis bauri - 1990