Dirk-Martin Scheel, Graham J. Slater, Sergios-Orestis Kolokotronis, Charles W. Potter, David S. Rotstein, Kyriakos Tsangaras, Alex D. Greenwood, Kristofer M. Helgen
Zookeys
Figure 5.Lateral views of crania of a Monachus monachus b Neomonachus schauinslandi, and c Neomonachus tropicalis. Arrows indicate the more developed occipital crest and zygomatic arches, and deeper snout of Monachus compared to Neomonachus species.