What is Nummulites depressus Kenawy 1978? Evolution of Nummulites fabianii group in the Middle Eocene of Egypt
Abd El Naby, Ahmed; Boukhary, M.; Abd El Naby, Ahmed;
Abstract
© 2014, © 2014 Taylor & Francis. New species Nummulites vetustufabianiin. 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. vetustufabianiin. 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 | Abd El Naby, Ahmed ; Boukhary, M. ; Abd El Naby, Ahmed | Issue Date | 2015 | Journal | Historical Biology | DOI | 7 847 http://www.scopus.com/inward/record.url?eid=2-s2.0-84928773567&partnerID=MN8TOARS 27 10.1080/08912963.2014.906410 |
Scopus ID | 2-s2.0-84928773567 |
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