PAGIOPHYLLUM. 47 



1850. Cyeadeoidea pijgmcea, TJnger, Gen. spec. p. 301. 

 l.SSi. C. pygmaa, Morris, Brit. Foss. p. 7. 



1S70. MantelUa pygmiBa, Carruthers, Trans. Linn. Soc. vol. xxvi. p. 703. 

 Cyeadeoidea pygmiBa, Schimper, Trait, pal. veg. vol. ii. p. 188. 



1893. C. pygmcea. Wood-ward, Lias, p. 378. 



1894. C. pygmcea, Ward, Proc. Biol. Soc. Washington, p. 80. 



The specimen on wliioli Lindley & Hutton founded this species 

 was "communicated bj' Prof. Buckland, from the Lias at Lyme 

 Regis." The authors note its resemblance to a cone, but they 

 Tefer to the irregularity of its figure and of the arrangement of the 

 scars, to the presence of a lateral tubercle, and to the absence of 

 seeds as facts indicative of its stem nature. They add, " When cut 

 through from the apex to the base, nothing can be seen except the 

 hases of blunt scales, planted perpendicularly upon a thick and 

 solid centre." 



I have not been able to trace the original specimen, and the 

 Museum collection does not include any Liassic stems that can be 

 referred to the same type. So far as one may base an opinion 

 ■on the drawing and the description, it would appear probable that 

 Lindley & Hutton correctly assigned the specimen to the genus 

 Cyeadeoidea. 



Class C0NIFEEALE8. 

 Genus PAGIOPHYLLUM, Heer. 



[Secc. Trab. Geol. Portugal, p. 11, 1881.] 



The resemblance between the vegetative shoots usually referred 

 to this provisional and non-committal genus and those of certain 

 recent species of Araucaria has led several authors to adopt the 

 name Araucarites. It is indeed highly probable that some at least 

 of the fossils placed in the genus Pagiophyllum arc twigs of 

 Araucarian trees; the abundance of petrified wood exhibiting 

 the characteristic anatomical features of the Araucariese lends 

 considerable weight to the inclusion of the Liassic and other species 

 in the genus Araucarites. Until we find well-preserved cones in 

 organic union with the twigs, or succeed in ascertaining their 

 anatomical structures, it is, however, safer to retain Heer's generic 

 designation. The coniferous shoots usually assigned to the genus 



