Where: Western Desert, Egypt (31.0° N, 28.0° E: paleocoordinates 10.8° N, 23.3° E)
• coordinate estimated from map
When: Early/Lower Cenomanian (99.6 - 93.5 Ma)
Environment/lithology: open shallow subtidal; lithified, argillaceous shale and lithified, argillaceous sandstone
•Abu Roash. Dated as early to middle Cenomanian (Hantar, 1990; Schrank and Ibrahim, 1995; Ibrahim,
•2002), about 170 m (560 ft) of the Bahariya Formation is encountered in the Razzak #7 well.
Size class: microfossils
Preservation: soft parts, original sporopollenin
Collection methods: chemical, hydrochloric, hydroflouric, sieve
Primary reference: M. Zobaa, C. Sanchez-Botero, C. Browne, F. E. Oboh-Ikuenobe, and M. I. Ibrahim. 2008. Kerogen and palynomorph analyses of the mid-Cretaceous Bahariya Formation and Abu Roash “G” Member, North Western Desert, Egypt. Gulf Coast Association of Geological Societies Transactions 58:933-943 [C. Jaramillo/G. Doria/A. Cardenas ]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 145104: authorized by Carlos Jaramillo, entered by Gabriela Doria on 26.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Ginkgoopsida | |
Ephedripites spp. Bolkhovitina and Potonié 1958 | |
Cycadopsida | |
Eucommiidites troedsonii cycads | |
Alaticolpites limai Regali et al. 1975 elaterate | |
Equisetopsida | |
Classopollis torosus Burger 1965 | |
"Spheripollenites psilatus" = Sphaeripollenites
"Spheripollenites psilatus" = Sphaeripollenites | |
Araucariacites australis Cookson 1947 | |
Angiospermae | |
Clavatipollenites hughesii Kemp 1968 | |
Afropollis jardinus Doyle et al. 1982
Retimonocolpites variplicatus Schrank and Mahmoud 1998 | |
Pennipollis peroreticulatus Friis et al. 2000
Pennipollis reticulatus Friis et al. 2010 | |
Polypodiopsida | |
Gleicheniidites senonicus Ross 1949 | |
Crybelosporites pannuceus Srivastava 1977 | |
Cicatricosisporites orbiculatus Singh 1964 | |
Pteridopsida | |
Deltoidospora minor Pocock 1970 | |
Dinophyceae | |
Spiniferites ramosus Lentin and Williams 1973 | |
Cyclonephelium vannophorum Davey 1969 | |
Florentinia sp., Florentinia cooksioniae, Oligosphaeridium complex, Kallosphaeridium sp., Coronifera oceanica
Florentinia sp. Davey and Verdier 1973
Oligosphaeridium complex Davey and Williams 1966
Kallosphaeridium sp. De Coninck 1969
Coronifera oceanica Cookson and Eisenack 1958 | |
Subtilisphaera spp. Jain and Millepied 1971
Subtilisphaera perlucida Jain and Millepied 1973 |