The late Eocene snakes

Über Archaeophis Proavus Mass., eine Schlange aus dem Eocan des Monte Bolca

W. Janensch

1906

Fossil snakes of North America

Charles W. Gilmore

1938

Table ronde sur les phosphorites du Quercy

Table ronde sur les phosphorites du Quercy Montpellier 1975.

1975

Non-ercine Booidea from the Oligocene and Miocene of Europe

Zbigniew Szyndlar

2003

The fossil snakes of Florida

Walter Auffenberg

1963

Serpentes

Oskar Kuhn

1963

Fossil Snakes of North America

J. Alan Holman

2000

A new fossil snake from the Notostylops beds of Patagonia

George Gaylord Simpson

1933