What is Nummulites depressus Kenawy 1978? Evolution of Nummulites fabianii group in the Middle Eocene of Egypt
Boukhary, M.; Abd El Naby, Ahmed; Almenoufy, Safia; Mahsoub, M.;
Abstract
New species Nummulites vetustufabianii n. sp. is described from the El Hamra Formation, Gara El Hamra section Bahariya
Oasis Western Desert. The biometrical measurements include maximum and minimum diameter of the successive radii and
heights of whorls, length/height ratio, number of chambers and the marginal cord thickness of each whorl for the
megalospheric generation as well as the diameter of proloculus were elaborated to differentiate between some allied
granulated species such as Nummulites depressus, Nummulites decrouezae, Nummulites cuvillieri and N. vetustufabianii n.
sp. Nummulites fabianii group has lateral distribution for the entire Tethys basin, hence such biometrical studies are needed
to emphasise the polyphyletic nature of the group.
Oasis Western Desert. The biometrical measurements include maximum and minimum diameter of the successive radii and
heights of whorls, length/height ratio, number of chambers and the marginal cord thickness of each whorl for the
megalospheric generation as well as the diameter of proloculus were elaborated to differentiate between some allied
granulated species such as Nummulites depressus, Nummulites decrouezae, Nummulites cuvillieri and N. vetustufabianii n.
sp. Nummulites fabianii group has lateral distribution for the entire Tethys basin, hence such biometrical studies are needed
to emphasise the polyphyletic nature of the group.
Other data
| Title | What is Nummulites depressus Kenawy 1978? Evolution of Nummulites fabianii group in the Middle Eocene of Egypt | Authors | Boukhary, M. ; Abd El Naby, Ahmed ; Almenoufy, Safia ; Mahsoub, M. | Issue Date | 2015 | Journal | Historical Biology | DOI | http://www.scopus.com/inward/record.url?eid=2-s2.0-84928773567&partnerID=MN8TOARS 10.1080/08912963.2014.906410 http://www.scopus.com/inward/record.url?eid=2-s2.0-84928773567&partnerID=MN8TOARS http://www.scopus.com/inward/record.url?eid=2-s2.0-84928773567&partnerID=MN8TOARS |
Scopus ID | 2-s2.0-84928773567 |
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