xxxix] 



ZAMITES 



535 



by linear or linear-elliptical pinnae attached obliquely to the 

 outer part of the upper surface of the rachis, somewhat abruptly 

 narrowed at the proximal end but slightly broadened at the 



Fia. 601. A — C, Zamites Buchianus. D, B, Zamites Carruthersi. F, Zamites 

 Zitteli. (A— C after Seward; British Museum; A, V. 2363; B, V. 2123o; C, V. 

 2227; F, after Sohenk.) 



actual base (fig. 601, D, E). The pinnae appear to have been 

 caducous and, as in fig. 601, D, the position of an absciss-layer 



