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» tral depression indicative of a mid rib, is nearly oblite- 
» rated. With some care, however, in detaching the ma- 
» trix from the pinnulae, I have been enabled to trace 
» what appears to be a slight radiation on the form of the 
» secondary veins, resembling that generally found in 
» Odontopteris (whence the specific name) : this may prove 
» to be deceptive, and other specimens may perhaps bet- 
» ter elucidate this view. 
» The general contour of this fern somewhat resembles 
» a single pinna of Neuropteris conferta Sternb.; but the 
» pinnulae are more oblong, and the terminal one more 
» acuminate ; but it still more closely approaches in form 
» à pinna of Odontopteris permiensis, a fern described 
» from the permian system, in the work on the geology 
» Of Russia, by R.-J. Murchison, Esq. 
» Presuming, on the other hand, that it forms a portion 
» Of à flabellate frond, a pinna, of which a drawing only 
» has been seen, bears considerable affinity, as to its mode 
» Of furcation, to the. recent species Gleichenia flabellata, 
» and under this point of view might be associated with 
» the genus Laccopteris Presl, should the venation prove 
» to be the same, — Locality : Jerusalem basin. » 
En 1869, M. Schimper rapportait avec doute le Pecop- 
teris odontopteroides Morris au genre Cycadopteris sous le 
nom de C. odontopteroides (Traité de paléontologie végé- 
tale, I, p. 488) et, en outre, il le décrivait (loc, cit., p. 369) 
sous le nom d’Alethopteris odontopteroides, toutefois en 
faisant suivre du signe du doute le nom générique. 
Enfin en 1872, M. W. Carruthers (Notes on fossil Plants 
from the Queensland, Australia, in the Quarterly Journal) 
décrit et figure une fougère provenant de la mine de 
charbon connue sous le nom de Tivoli (Australie) et qu’il 
