60 O. C. Marsh— New Jurassic Mammal. 
Art. XI.—WNotice of a new Jurassic Mammal; by Professor 
. C. Marsa. 
Length of portion of jaw preserved... ___. 115, = 
Extent of five molar teeth..............- 4° 
Extent of entire molar series _...___.___- 5° 
Height of fifth true molar above jaw _.--. 2 
Depth of jaw below fifth molar _-....___- 1°75 
Depth of jaw below last premolar........ 1° 
Depth of jaw below first premolar. ....__- 1-4 
In comparing this interesting fossil with the forms already 
known, it is at once evident that it differs widely from any liv- 
ing type. Its nearest affinities are clearly with the genus 
Stylodon of Owen, from the Purbeck beds of England,+ and in 
ag : 
many respects the correspondence is close. 
* This Journal, vol. xv, p. 459, June, 1878. 
+ Geological Magazine, vol. ili, p. 199, 1866, and Paleontographical Society, 
_ Vol. xxiv, p. 45, 1871. 
