Steemans, P.; Higgs, K. T.; Wellman, C. H. (2000). Cryptospores and trilete Spores from the Llandovery, Nuayyim-2 Borehole, Saudi Arabia. Pp. 92-115 in In S. Al-Hajri and B. Owens (eds.), Stratigraphic Palynology of the Palaeozoic of Saudi Arabia. Arabian Printing and Publishing House, Manama, Bahrain.
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Steemans, P.; Higgs, K. T.; Wellman, C. H.
2000
Cryptospores and trilete Spores from the Llandovery, Nuayyim-2 Borehole, Saudi Arabia. Pp. 92-115 in In S. Al-Hajri and B. Owens (eds.), Stratigraphic Palynology of the Palaeozoic of Saudi Arabia. Arabian Printing and Publishing House, Manama, Bahrain