The Ceratopsia

Hooded hadrosaurs of the Belly River series of the upper Cretaceous

Charles Mortram Sternberg

1935

Hooded Hadrosaurs of the Belly River series of the Upper Cretaceous

C. M. Sternberg

1935

The ornithischian dinosaur Psittacosaurus from the lower Cretaceous of Asia and the relationships of the Ceratopsia

Paul Callistus Sereno

1987

Annual report of the National Museum for the fiscal year 1948-1949

National Museum of Canada

1950

New ceratopsian dinosaur from the Upper Cretaceous of Montana

Charles W. Gilmore

1914

A revision of the Ceratopsia or horned dinosaurs

Richard Swann Lull

1933

The horned dinosaurs

Peter Dodson

1996

Looking at-- Triceratops

Jenny Vaughan

1993