ARKIV FOR BOTANIK. 
BAND 10. N:o 14. 
Cloughtonia, a problematic fossil plant from 
the Yorkshire Oolite. 
By 
THORE G. HALLE. 
With 2 plates. 
Communicated April 12th 1911 by A. G. NATHORST and G. LAGERHEIM. 
During a visit to the Yorkshire coast in the summer of 1910, 
undertaken with assistance of the funds of »Stiftelsen Lars 
Hiertas Minne », I found in the Middle Estuarine shales at Clough- 
ton Wyke several specimens of a fossil plant discovered in the 
same locality by Professor A. G. NATHORST in 1879. The single 
specimen first found was provisionally referred to by him as 
Anthrophyopsis n. sp.,' with the remark that it is in habit not un- 
like a Gangamopteris. It is now in the Palzobotanical Depart- 
ment of the State Museum of Natural History at Stockholm, 
where I have been able to ascertain its identity with the fossils 
collected by myself last summer. The first specimen had 
then already somé time ago been reexamined by Prof. NATHORST, 
who had noted on the label that the veins do not appear to anas- 
tomose. This fact proved that the fossil could not be an Anthro- 
phyopsis, and the examination of my material has led me to the 
opinion that it is probably not a fern-frond at all. There is no 
genus of fossil plants to which the present objects could be re- 
ferred, and so I have ventured to institute a new provisional ge- 
nus for their reception, naming them after the famous locality 
for fossil plants in which so far they have exclusively been found. 
! NATHORST, A. G. Berättelse, afgifven till Kongl. Vetenskaps-Aka- 
demien, om en med understód af allmünna medel utfórd vetenskaplig resa 
till England. Ofvers. K. Vetenskapsakademiens Fórhandlingar 1880. N:o 
5. Stockholm, p. 35, 62 and 83. 
Arkiv für botanik. Band 10. N:o 14. 1 
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