Landing, E., Geyer, G., 1995. Morocco ’95—The Lower-Middle Cambrian Standard of Western Gondwana, in: Geyer, G., Landing, E. (Eds.), Morocco ’95—The Lower-Middle Cambrian Standard of Western Gondwanapp. 5, 6.

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.

Landing, E., Bowring, S., Davidek, K., Westrop, S., Geyer, G., Heldmaier, W., 1998. Duration of the Early Cambrian: U-Pb Ages of Volcanic Ashes from Avalon and Gondwana. Canadian Journal of Earth Science 35, 329-338. doi:10.1139/e97-107

Geyer, G., Landing, E., 2001. Middle Cambrian of Avalonian Massachusetts: Stratigraphy and Correlation of the Braintree Trilobites. Journal of Paleontology 75, 116-135. doi:10.1666/0022-3360(2001)075<0116:MCOAMS>2.0.CO;2