Crocodilian SpeciesThere are 26 species of crocodilian currently recognised (Hekkala et al. 2011; Shirley et al. 2014, 2018; Eaton 2010). However, evidence suggests that there are two additional species, Osteolaemus aftezelli and Crocodylus halli, which have yet to be formally recognised. References Eaton, M.J. (2010). Dwarf Crocodile Osteolaemus tetraspis. Pp. 127-132 in Crocodiles. Status Survey and Conservation Action Plan. Third Edition. Crocodile Specialist Group: Darwin. Download. Hekkala, E., Shirley, M.H., Amato, G., Austin, J.D., Charter, S., Thorbjarnarson, J., Vliet, K.A., Houck, M.L., Desalle, R. and Blum, M.J. (2011). An ancient icon reveals new mysteries: mummy DNA resurrects a cryptic species within the Nile crocodile. Molecular Ecology 20: 4195-4215. Download. Shirley, M.H., Vliet, K.A., Carr, A.N. and Austin, J.D. (2014). Rigorous approaches to species delimitation have significant implications for African crocodile systematics and conservation. Proceedings of the Royal Society B: Biological Sciences 281(1776): 20132483. Download. Shirley, M.H., Carr, A.N., Nestler, J.H., Vliet, K.A. and Brochu, C.A. (2018). Systemic revision of the living African Slender-snouted crocodiles (Mecistops Gray, 1844). Zootaxa 4504(2): 151-193. Download.
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