Geyer, G., Landing, E., 1995. The Cambrian of the Moroccan Atlas Regions, in: Geyer, G., Landing, E. (Eds.), Morocco ’95-The Lower-Middle Cambrian Standard of Western GondwanaBeringia. pp. 7-46.

Geyer, G., Heldmaier, W., Landing, E., 1995. Arthropod Traces in the Middle Cambrian of Morocco, in: Geyer, G., Landing, E. (Eds.), Morocco ’95-The Lower-Middle Cambrian Standard of Western GondwanaBeringeria. pp. 254.

Geyer, G., Heldmaier, W., Landing, E., 1995. Arthropod Traces in the Middle Cambrian of Morocco, in: Geyer, G., Landing, E. (Eds.), Morocco ’95-The Lower-Middle Cambrian Standard of Western GondwanaBeringeria. pp. 254.

Geyer, G., Landing, E., 2000. The Cambrian in Israel and Jordan-The Feather Edge of the Mediterranean Region, in: Acenolaza, G., Peralta, S. (Eds.), Cambrian From the Southern Edge.Instituto Superior de Correlacion Geologica (INSUGEO), Universidad Nacional de Tucuman. pp. 98-101.

Geyer, G., Landing, E., 2006. Morocco Field Excursion 2006. Ediacaran-Cambrian Depositional Environments and Stratigraphy of the Western Atlas Regions, in: Geyer, G., Landing, E. (Eds.), Morocco 2006. EdiacaranCambrian Depositional Environments and Stratigraphy of the Western Atlas Regions. Explanatory Description and Field Excursion Guidepp. 47-112.

Geyer, G., Landing, E., 2006. Latest Ediacaran and Cambrian of the Moroccan Atlas Regions, in: Geyer, G., Landing, E. (Eds.), Morocco 2006. Ediacaran-Cambrian Depositional Environments and Stratigraphy of the Western Atlas Regions. Explanatory Description and Field Excursion Guidepp. 7-46.

Geyer, G., Landing, E., 2006. Latest Ediacaran and Cambrian of the Moroccan Atlas Regions, in: Geyer, G., Landing, E. (Eds.), Morocco 2006. Ediacaran-Cambrian Depositional Environments and Stratigraphy of the Western Atlas Regions. Explanatory Description and Field Excursion Guidepp. 7-46.

Geyer, G., Landing, E., 2006. Morocco Field Excursion 2006. Ediacaran-Cambrian Depositional Environments and Stratigraphy of the Western Atlas Regions, in: Geyer, G., Landing, E. (Eds.), Morocco 2006. EdiacaranCambrian Depositional Environments and Stratigraphy of the Western Atlas Regions. Explanatory Description and Field Excursion Guidepp. 47-112.

Geyer, G., Landing, E., 2016. The Precambrian–Phanerozoic and Ediacaran–Cambrian Boundaries: A Historical Approach to a Dilemma, in: Brasier, A., McIlroy, D., McLoughlin, N. (Eds.), Earth System Evolution and Early Life: A Celebration of the Work of Martin BrasierGeological Society of London, London, England. pp. 311-349. doi:10.1144/SP448.10

Geyer, G., Landing, E., 1995. MOROCCO ’95-The Lower-Middle Cambrian Standard of Gondwana. Special IssueBeringria.