104 ON THE FOSSIL FLORA OF THE COAL DEPOSITS OF AUSTRALIA, 



odontopteroides, Schimper, ibid, p. 569 ; 1872, Pecopteris odontopte- 

 roides, Carruthers, Qu. J. G. S., London, vol. xxviii., p. 335, Tab. 

 27, figs. 2, 3 ; 1875, Odontopteris, Crepin, Bull de l'Acad. Royale 

 de Belgique 1875, vol. xxxix , 2 Serie, pp. 258-263, figs. 1-5; 



1877, Thinnfeldia morrissi, Feistmantel, N. J., Mineral, &c, 1877. 

 p. 179 ; 1878, Pecopteris odontopteroides, Etheridge (R.), Catalogue 

 of Australian Fossils, p. 98 ; 1878-79, Thinnfeldia odontopteroides, 

 Feistmantel, Flora des oestl. Australiens, Palaeontographica, 

 Supplement iii. Hef. iii., pp. 105, 165 ; 1878, Gycadopteris, M. 

 Zeiller in Guide du Geologue al'Exposition Universelle (Paris) de 



1878, &c. ; 1880, Thinnfeldia crassinervis, Gein., and Pecopteris 

 odontopteroides, Morr., probably identical, A. G. Nathorst in 

 Ofbers. of Kongl Vel Akad. Stockholm, Forhandl., 1880, No. 5 

 (Review in botan. Centralblatt, No. 2, page 328, 1881). 

 Thinnfeldia odontopteroides, Feistmantel, Fossil Flora of Damuda 

 and Panchet div., p. 85, pi. xxiii., A, figs. 7, 9, from whence the 

 foregoing synonymy is for the most part taken. 



This widely spread fern, which is a very common fossil in Aus- 

 tralia and Tasmania though rare apparently in India, was first 

 described by Morris from very imperfect and very incomplete spe- 

 cimens and so to a certain extent was the figure of Carruthers 

 (Geol. of Queensland, loc cit., p. 355J. The numbers of speci- 

 mens since found gave every facility to Dr. Feistmantel for the 

 following diagnosis. Frond of varying size from small to large, 

 simple or dichotomously divided. Simple fronds, pinnate, 

 pinnatifid, pinnae long, pinnules rhomboid-ovate, here and 

 there dentate, connate at the base, lower basal ones inserted on the 

 rachis, semi-elliptic, or connected with the following pinnule. 

 Dichotomous fronds pinnatifid or pinnate pinnatifid ; pinnae in 

 the undivided portion and near the division close and short, those 

 of the branches longer ; pinnules variable, sometimes obliquely 

 ovate, oblong, sometimes quadrately ovate, entire, or obliquely 

 truncate above, or indentate ; on the frond pinnate pinnatifid, 

 lowest basal pinnules, even those remote and those in the upper 

 part fixed to the rachis. Veins, rising partly from one which is 

 almost median, coming from the basal part of the leaf at the 



