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I tliink Zcugophyllites elongalus, Morris, docs not fit well in the genus 
Noggeratliia, nor in the present Ndggerathiopsis ; and Mr. Etheridge, in 
ids Catalogue, has also separated it from Noggeratliia (the present Ndggerathi- 
opsis). The systematic position, like that of Cordaites , is not yet quite 
satisfactorily decided, and many heterogeneous leaves were included in that 
genus. The last view, therefore, was that the genus Noggeratliia belonged 
to the Gymnosperms, between the Conifers and Cyadeaceae. But in 1879 
my father showed that certain species of Noggeratliia from the Bohemian 
coal beds exhibited a fructification, as is usual in ferns (with sporangia and 
spores) ; so that they had to be placed with the ferns. Other types were also 
separated and placed in various other orders. 
The Indian and Australian leaves remain, however, unaffected by this 
discovery, as they appear best characterized as belonging to the Cycadeaceae. 
Similar leaves to those in India and Australia were also collected by Tchihat- 
•cheff in the Altai Mountains, and Prof. G op pert described them as Nogger- 
atliia distans and N . i equalis , and the formation was then said to be Permian.* 
But later investigations by Prof. T. Schmalhausen have shown that these 
plant deposits on the Altai belong to the Jurassic Eormation. The said 
species of Noggeratliia he considered then as leaflets of Cycadeaceous plants, 
which showed affinities with Zamici and Podozamites, and he proposed for 
these species of Noggeratliia a new generic name, Phiptozamites. 
In t lie Supplement to my Australian Elora (1879) I have already- 
pointed to the close relation of Ndggerathiopsis and Phiptozamites ; and in 
the Supplement to my Talcbir-Karharbari Elora (1881) I have established 
the family Noggeratliiopsideae, to include both these genera, classing them 
with Cycadeaceae. 
In a more recent publication Prof. Schmalhausenf declared his Phip- 
tozamites and my Ndggerathiopsis to be identical, of which I was also aware 
before. But while Prof. Schmalhausen, in 1879, was quite convinced of the 
Cycadeaceous nature of his leaves, calling them at once Phiptozamites, he is 
now more inclined to consider this genus as belonging rather to the Cordaiteae 
(between Cycadeaceae and Coniferae) ; so that my genus Ndggerathiopsis would 
have to be classed in the same way. But, from the reasons given by Prof. 
Schmalhausen, it is not quite evident whether he is quite correct in classing 
these leaves with the Cordaiteae, and I think the present material is not 
sufficient for such a decision. I would therefore consider Ndggerathiopsis 
* Tcliiliatclieff, Voyage dans 1’ Altai orientate, &c., 1845, p. 378. 
f Pflanzenpalaeontologiselie Beitrage : Melanges Biol., Tome XI, 1883. 
