- Dinosaurs.
Cambridge UP. Riggs, E.S. 1904. "Structure and
relationships of
opisthocoelian dinosaurs. Part II, the Brachiosauridae".
Field Columbian Museum, Geological...
- preprints.1347v1. Riggs, E.S. (1903). "Structure and
Relationships of
Opisthocoelian Dinosaurs. Part I,
Apatosaurus Marsh" (PDF).
Publications of the Field...
- s4-15.88.299. Riggs,
Elmer S. (1904). "Structure and
relationships of
opisthocoelian dinosaurs, part II: the Brachiosauridae".
Field Columbian Museum Publications...
- 2015. Riggs, E. S. (August 1903). "Structure and
Relationships of
Opisthocoelian Dinosaurs. Part I,
Apatosaurus Marsh" (PDF).
Publications of the Field...
- doi:10.3133/pp451. Riggs, E.S. (1904). "Structure and
relationships of
opisthocoelian dinosaurs. Part II. The Brachiosauridae".
Geological Series (Field Columbian...
-
other unnamed dinosaurs. Broom, R. (1904). On the
occurrence of an
opisthocoelian dinosaur (Algoasaurus Bauri) in the
Cretaceous beds of
South Africa...
- Michigan. 32 (11): 189–243. Broom, R. (1904). "On the
occurrence of an
opisthocoelian dinosaur (Algoasaurus bauri) in the
Cretaceous beds of
South Africa"...
- 5 (2): 63–70. Riggs, E.S. (1903). "Structure and
Relationships of
Opisthocoelian Dinosaurs. Part I,
Apatosaurus Marsh" (PDF).
Publications of the Field...
- 2011-07-15.
Retrieved 2008-08-07. Broom, R. 1904. On the
occurrence of an
opisthocoelian dinosaur (Algoasaurus bauri) in the
Cretaceous beds of
South Africa...
