Anchiceratops ornatus, Hypacrosaurus altispinus and Albertosaurus libratus by Gregory Paul. From Terra: The Member's Magazine of The Natural History Museum of Los Angeles County. Volume 24, No. 3. January/February 1986.
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Anchiceratops ornatus, Hypacrosaurus altispinus and Albertosaurus libratus by Gregory Paul. From Terra: The Member's Magazine of The Natural History Museum of Los Angeles County. Volume 24, No. 3. January/February 1986.
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Gregory S. Paul. 1988.
Predatory Dinosaurs of the World: A Complete Illustrated Guide. Written and drawn by Gregory Paul. 1989.
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Predatory Dinosaurs of the World: A Complete Illustrated Guide. Written and drawn by Gregory Paul. 1989.
Internet Archive
Predatory Dinosaurs of the World: A Complete Illustrated Guide. Written and drawn by Gregory Paul. 1989.
Internet Archive
Predatory Dinosaurs of the World: A Complete Illustrated Guide. Written and drawn by Gregory Paul. 1989.
Internet Archive
Predatory Dinosaurs of the World: A Complete Illustrated Guide. Written and drawn by Gregory Paul. 1989.
Internet Archive
Predatory Dinosaurs of the World: A Complete Illustrated Guide. Written and drawn by Gregory Paul. 1989.
Internet Archive