OF LOWER GREE^SAND PLAKTS. 



Genus CEDROSTROBUS, nov. 



Diagnosis. Fossil, 5 cones with overlapping broad scales, 

 having a very definite and recognisable likeness to the recent 

 genus Cedrus. 



In one sense this genus may be looked on as a section of the 

 wider genus Pinostrobus (see p. 122), but it is confined to 

 specimens which are so well characterised that there is no 

 doubt of their similarity to, if not complete identity with, the 

 living genus Cedrus. It is interesting to note that Cedar-liko 

 cones, described by various writers frankly under the modern 

 generic name of Cedrus, are among the very early remains of the 

 Abietinea3 [see, for example, Cedrus Lennieri described from 

 the Upper Neocomian by Saporta in 1880, and the beautiful 

 casts from the Albian greensands described by Fliche (1896, 

 p. 200, pi. via)]. From English Aptian deposits two species are 

 described, one of which is founded on a fine specimen. The 

 genus is very rare in the American Lower Cretaceous, Berry 

 (1911) describing only one example, Cedrus Leei ; and it is not 

 impossible that it may have originated in the East. 



Woods described as referable to various species of Cfdroxylon 

 are not very common, but several species have been determined , 

 some apparently belonging to Cedrus in a true sense, and thus 

 representing the parent-trees of these cones. 



Cedrostrobus Leckenbyi (Carruthers), comb. nov. 

 [Text-fig. 39.] 



1869. Pinitfs Leckenlyi, Carruthers, Geol. Mag., vol. 6, p. 2, pi. i, 

 figs. 1 ". 



1870. Cedrus Lcckcnbyi , Schimper, Trait e Paleont., vol. 2, p. 299. 

 1880. P'inites Leckcnhyi, Gardner, IJep. Brit. Assoc., 1885, p. 246, 



and Geol. Mag. dec. 3, vol. 3, p. 499. 



189G. Cedrus ollvnya, Fliche, Bull. Soc. Sci. Nancy, vol. 14, p. 200, 

 pi. viii, figs. 1-5. 



Diagnosis. Given by Carruthers is as follows : " Cone 

 oblong-ovoid, with an obtuse or subtruncate apex ; scales very 

 broad, not thickened at the apex ; seeds small, ovoid." To this 

 should now be added : Cone 10 cm. long by 5 cm. broad, 

 slightly tapering, and rounded at both ends. Scales very 



