Astibia, H. & Buffetaut, E. & Buscalioni, A.D. & Cappetta, H. & Corral, J.C. & Estes, R. & Garcia-Garmilla, F. & Jaeger, J.-J. & Jimenez-Fuentes, E. & Leloeuf, J. & Mazin, J.-M. & Orue-Etxebarria, X. & Pereda-Suberbiola, J. & Powel, J.E. & Rage, J.-C. & Rodriguez-Lazaro, J. & Sanz, J.-L. & Tong, H. (1990)
The fossil vertebrates from Laño (Basque County, Spain); new evidence on the composition and affinities of the Late Cretaceous continental faunas of Europe. Terra Nova, (2): 460–466, 6 fig.
DOI: 10.1111/j.1365-3121.1990.tb00103.x

Estes, R. & Sanchíz, B. (1982)
Early Cretaceous lower vertebrates from Galve (Teruel), Spain. Journal of Vertebrate Paleontology, 2(1), 21–39
DOI: 10.1080/02724634.1982.10011915

Estes, R. (1976)
Middle Paleocene lower vertebrates from the Tongue River Formation, southeastern Montana. Journal of Paleontology, 50(3), 500–520

Estes, R. & Berberian, P. (1970)
Paleoecology of a Late Cretaceous vertebrate community from Montana. Breviora, 343, 1–35

Estes, R. & Berberian, P. & Meszoely, C. (1969)
Lower vertebrates from the Late Cretaceous Hell Creek Formation, McCone County, Montana. Breviora, 337, 1–33

Estes, R. (1964)
Fossil vertebrates from the Late Cretaceous Lance Formation, Eastern Wyoming. University of California Publications in Geological Sciences, 49, 1–180

Estes, R. (1961)
Change of Name for a Cretaceous Chimaeroid. Journal of Paleontology, 35(5), 1087

Estes, R. (1960)
Change of Name for a Cretaceous Chimaeroid. Journal of Paleontology, 34(5), 1054