Gazelle : The Palestinian Biological Bulletin (ISSN 0178 – 6288) . Number 134, February 2016, pp. 1-44. | Page 38

38 Prof. Dr. Sc. Norman Ali Bassam Ali Taher Khalaf-von Jaffa studying the fossils at Wadi El-Hitan (Whales Valley), Al-Fayyum, Western Desert, Egypt. 11.07.2012. Photo by: Ola Mostafa Khalaf. https://www.flickr.com/photos/50022881@N00/15314989888/ Gingerich, Philip D.; Smith, B. Holly; Simons, Elwyn L. (1990). Hind Limbs of Eocene Basilosaurus: Evidence of Feet in Whales. Science 249 (4965): 154–157. Gingerich, P. D.; Uhen, Mark D. (1998). Likelihood estimation of the time of origin of Cetacea and the time of divergence of Cetacea and Artiodactyla. Palaeontologia Electronica 1 (2): 1–45. Retrieved September 2013. Kellogg, R. (1936). A review of the Archaeoceti Washington: Carnegie Institution of Washington. Khalaf, Norman Ali Bassam (1980). Tabie’t Al-Talawon fi Al-Haywanat (The Colouration of Animals). Al-Biology Bulletin. Number 1. January 1980, Safar 1401. Biological Society, Kuwait University, State of Kuwait. pp. 4-5. (in Arabic). Khalaf, Norman (1982). A’maar Al-Haywanat (Animal Ages). Al-Biology Bulletin. Number 18, Third Year, First Semester, Saturday 6.11.1982. Biological Society, Kuwait University, State of Kuwait. pp. 7. (in Arabic). Khalaf, Norman Ali Bassam (1987). Blue Whales (Balaenoptera musculus) from the State of Kuwait, Arabian Gulf. Gazelle: The Palestinian Biological Bulletin. Rilchingen-Hanweiler, Federal Republic of Germany. Number 14, Fifth Year, Gazelle : The Palestinian Biological Bulletin – Number 134 – February 2016