241 



Note. — Ammonites, nodosus , Jugosics, elegans, concavus, should precede 

 lower oolite, pp. 240, 241. 



♦ Remains of other species, bearing, with the oval form, the charac- 

 ters of nautilus or ammonites, are found in some of the succeeding strata^ 

 but most frequently in the chalk marl and lower chalk. 



I 1. 



