Bibliografía (15 obras)
Palynology and paleoenvironment of the Uppermost Bathonian and Oxfordian (Jurassic) of the northern Switzerland sedimentary basin
1999
Vertebrate fossils and the evolution of scientific concepts
1995
Vertebrate footprints and invertebrate traces from the Chadronian (late Eocene) of Trans-Pecos Texas
1994
Terrestrial trace-fossils
1983
The dinoflagellate cysts of the Gonyaulacysta group
1982
Geologists and the history of geology
1980
Geologists and the history of geology: an international bibliography from the origins to 1978
Geologists andthe history of geology
History of concepts in Precambrian geology
1979
A guide to the identification of Jurassic dinoflagellate cysts
1978
Palynology
1977
Fossil and living dinoflagellates
1974
Dinoflagellate cysts and acritarchs from the Upper Vardekløft Formation
1972
The supposed "sponge spicules" of Merrill, 1895, from the lower Cretaceous (Albian) of Texas
1966
