


PLATE VIIL 
PERMIAN VERTEBRATA. 'TRIMERORHACHIS 
Fries. 1-11. Trimerorhachis insignis Cope, 1878. Occiput, jaws, vertebre and limb bones, 
natural size. Type specimen, Amer. Mus., No. 4565, Cope Coll. Lower Per- 
mian, Wichita Basin, Texas. 
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