Xo. XVIII. 



Description of a Fragment of I In Head, of a New Fossil 

 Jiiiniii/. discovered in <t Marl Fit, near Moorestoum, New 

 Jersey. By hum' //ni/s. M.D. 



I 



am indebted for the opportunity of describing this spe- 

 cimen to my friend Mr Isaac Lea. whose zeal in the 

 cause of science is too well known to require any eulogium 

 from me. It was found by Mr Joseph Brick in Inskeep's 

 marl pit, on Pcnsauken creek, 5 miles south cast of Moores. 

 town. New Jersey ; and was presented by J. J. Spencer. M.D. 

 of Moorestown to Mr Lea, in whose valuable cabinel it is 

 at present. The marl in which it was found is of that 

 description called fine green marl: the stratum is ahout ten 

 feet thick, and commences about two feet from the surface. 

 In this stratum are found marine shells, (principally tere- 

 hratuhe) shark's teeth, &c. 



The only part of this animal yet discovered is the frag- 

 ment in the possession of Mr Lea, consisting of a portion 

 of the head and lower jaw. Some of the hones are in a 

 tolerable state of preservation; others are covered with marl 

 which has become too hard to be removed, or are so muti- 

 lated that they cannot be satisfactorily made out. 



About three inches and four-tent hs, if the anterior portion of 

 the lower jaw are preserved; the two sides are nearly 

 parallel; anteriorly they are >li^htly mutilated — appear to 

 have been very little rounded, and in contact: inferiorly, 

 through the whole extent of die fragment, tiny are in con- 



VOL. Hi. — 6 I) 



