646 STUDIES FOR STUDENTS 
Below is a list of the various genera of the Dinosaurs 
arranged to show their systematic and time relations. 
Cretaceous 
Lelaps 
Ornithomimus 
Triassic Jurassic 
Anchisaurus Celurius 
Zanclodon 
Epicampodon 
Massospondylus 
Arctosaurus 
Tanystropheus 
THEROPODA 
Ceratosaurus 
A llosaurus Megalosaurus 
Labrosaurus 
Creosaurus 
Megalosaurus 
Streptospondylus 
Aristosuchus 
Compsognathus 
Flallopus 
SAUROPODA Brontosaurus 
Camarosaurus 
Morosaurus 
A patosaurus 
Cetiosaurus 
Ornithopsis 
Diplodocus 
Titanosaurus 
PREDENTATA 
Dystropheus 
Euscelosaurus 
Stegosaurus 
Camptosaurius 
Laosaurus 
Dryosaurus 
A gathaumus 
Torosaurus 
Claosaurus 
Hladrosaurus 
Nanosaurus 
Scelidosaurus 
18, (C, (Casa. 
REFERENCES. 
For the Theriodonta. 
Osborn, H. F. A Great Naturalist. Century Magazine, November 1897. 
Osborn, H. F. Origin of the Mammalia. Am. Nat., May 1808. 
Lydekker, R. Catalogue of the Fossil Reptilia and Amphibia of the British 
Museum. Vol. IV, London 1890. 
For the Dinosaurs. 
Marsh, O.C. The Dinosaurs of North America. Sixteenth Ann. Rpt. of the 
Director of the U.S. Geol. Sury. (Contains a large number of illustrations of the 
various genera and a summary of the author’s writings on the subject in the pages of 
the Am. Jour. of Sc.) = 
Baur, G. Remarks on the Reptiles Generally called Dinosauria. Am. Nat., 
May 1891. 
Ballou, W. H. Strange Creatures of the Past. Century Magazine, November 
1897. (Contains many good illustrations of Dinosaurs.) 
