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 145101: authorized by Carlos Jaramillo, entered by Gabriela Doria on 26.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cycadopsida | |
Alaticolpites limai Regali et al. 1975 elaterate | |
Eucommiidites troedsonii cycads | |
Ginkgoopsida | |
Ephedripites spp. Bolkhovitina and Potonié 1958 | |
Angiospermae | |
Clavatipollenites hughesii Kemp 1968 | |
Retimonocolpites variplicatus Schrank and Mahmoud 1998
Afropollis jardinus Doyle et al. 1982 | |
Pennipollis peroreticulatus Friis et al. 2000
Pennipollis reticulatus Friis et al. 2010 | |
Equisetopsida | |
Classopollis torosus Burger 1965 | |
"Spheripollenites psilatus" = Sphaeripollenites
"Spheripollenites psilatus" = Sphaeripollenites | |
Araucariacites australis Cookson 1947 | |
Pteridopsida | |
Deltoidospora minor Pocock 1970 | |
Polypodiopsida | |
Cicatricosisporites orbiculatus Singh 1964 | |
Crybelosporites pannuceus Srivastava 1977 | |
Gleicheniidites senonicus Ross 1949 | |
Dinophyceae | |
Subtilisphaera spp. Jain and Millepied 1971
Subtilisphaera perlucida Jain and Millepied 1973 | |
Spiniferites ramosus Lentin and Williams 1973 | |
Cyclonephelium vannophorum Davey 1969 | |
Kallosphaeridium sp., Florentinia sp., Florentinia cooksioniae, Coronifera oceanica, Oligosphaeridium complex
Kallosphaeridium sp. De Coninck 1969
Florentinia sp. Davey and Verdier 1973
Coronifera oceanica Cookson and Eisenack 1958
Oligosphaeridium complex Davey and Williams 1966 |