[1. Weston EM: Evolution of ontogeny in the hippopotamus skull: using allometry to dissect developmental change. Biological Journal of the Linnean Society. 2003, 80: 625-638.10.1111/j.1095-8312.2003.00263.x]Search in Google Scholar
[2. HooijerDA: On the supposed hexaprotodont milk dentition in Hippopotamus amphibious L. Zool. Med. Museum Leiden 1942, 24: 187-196.]Search in Google Scholar
[3. Laws RM: Dentition and ageing of the hippopotamus. African Journal of Ecology. 1968, 6: 19-52.10.1111/j.1365-2028.1968.tb00899.x]Search in Google Scholar
[4. Leidy J: On the osteology of the head of Hippopotamus and a description of the osteological characters of a new genus of Hippopotamidae. Jour. Acad. Nat. Sci. n.s,1952, 2(3): 207-234]Search in Google Scholar
[5. Lucy KM, Indu VR, Leena C, Fathima R, George C, Patki HS, Surjith S, Anneth AJ: Gross anatomy of the skull of the hippopotamus (Hippopotamus amphibious). Indian Journal Of Animal Research, 2017, B-3277: 1-3, DOI:10.18805/ijar.v0iOF.765910.18805/ijar.v0iOF.7659]Search in Google Scholar
[6. O’Leary MA: Basicranial anatomy of extant Artiodactyla. Bulletin American Museum Of Natural History, 2016, 409: 44-4810.1206/0003-0090-409.1.1]Search in Google Scholar
[7. Orliac MJ, Guy F, Lebrun R: Osteological connections of the petrosal bone of the extant Hippopotamidae Hippopotamus amphibius and Choeropsis liberiensis. MorphoMusueum Anatomy Atlas Journal 2016, 1: 1-610.18563/m3.1.1.e1]Search in Google Scholar
[8. Walzer C, Stalder G: Hippopotamidae (Hippopotamus). In Fowler’s Zoo and Wild Animal medicine, edited by Miller RE and Fowler ME, volume 8, Elsevier Saunders, 2015.10.1016/B978-1-4557-7397-8.00059-1]Search in Google Scholar
[9. Marinković D, Aničić M, Özvegy J, Lozanče O, Aleksić-Kovačević S: Single Left Coronary Artery in a Common Hippopotamus (Hippopotamus amphibius). Programme and Abstract Book of the Third Joint European Congress of the ESVP, ESTP and the ECVP »Cutting Edge Pathology«, Lyon, France, 30th August - 2nd September , 2017, p. 142 (ESVP/ ECVP Proceedings, Journal of Comparative pathology vol. 158, p.148, 2018.)10.1016/j.jcpa.2017.10.168]Search in Google Scholar
[10. Nickel R, Schummer A, Seiferle, E: The Anatomy of Domestic Animals-Vol.1. Verlag Paul Parey, Berlin,Hamburg, 1986.]Search in Google Scholar
[11. Dyce KM, Sack WO, Wensing CJG: Textbook of veterinary anatomy, fourth edition, Saunders Elsevier, 2010.]Search in Google Scholar