SKULLS OF CYNODOXX REPTILES. 



923 



In tlie following diagram is represented what appears to be the 

 genetic relationships of the principal known Cynodont genera :— 



Thevocephaliaii Ancestor. 



~"^JEhirosuchns 



Maiiiiualian 



Ancestor. Sesamodon 



'Galesauriis 



^Njjfhosanrus 



Melinodon 



TriracJiodoii 



I 



\ 

 Ci/noc/natJms 



Viademodon \ 



(jromph ncjna th us 



List of References to the Principal Literature. 



Baue, G. — On the Qnadrate in tlie Mammalia. Q. J. Micr. Sc. Vol. xxviii, 1886, 



p. 169. 

 Broom, R. — On the Fate of the Quadrate in Mammals. Ann. Mag. N. Hist., Nov. 



1890, p. 409. 



On the Occurrence of an apparent distinct Prevomer in Gomphofftiathus. 



Journ. Anat. & Phys., Vol. xxxi, 1897, p. 277. 



On the Structure and Affinities of Udenodon. P. Z. S. 1901, Vol. ii, 



p. 162. 



On the Classification of the Theriodontsand their Allies. Rep. S. Afr. Assoc. 



Adv. Sc. 1903, p. 286. 



■ ■ On the Lower Jaw of a small Mammal from the Karroo Beds of Aliwal 



North, South Africa. Geol. Mag., Aug. 1903, p. 345. 



On the Mammalian and Reptilian Vomerine Bones. Proc. Linn. Soc. 



N. S. W., 1902, p. 545. 



On the Theriodonts in the Albany Museum. Rec.Alb. Mus., Vol.i, 1904, p. 82. 



(Jn the Structure of the Theriodont Mandible and on its Mode of Articu- 



lation with the Skull. P. Z. S., 1904, Vol. i, p. 90. 



Preliminary Notice of some new Fossil Reptiles collected by Mr. Alfred 



Brown at Aliwal North, S. Africa. Rec. Alb. Mus., Vol. i, 1905, p. 269. 

 (Preliminarj' notice of Sesamodon browni and Ilelinodon simus.) 



