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TWO NEW NORTH AMERICAN CYCADEOIDS 
By G. R. Wieland 
Towards the end of 1919 the writer was asked to examine a 
specimen of cycad from the Belly River beds near Red Deer 
river, Alberta. The specimen was discovered by C. M. Stern- 
berg who furnished notes on its occurrence. 
It is proposed to include, with a description of this specimen, 
notes on a small petrified trunk from Texas, found, some years 
ago, by Dr. Emilio Bose, and forwarded by Dr. J. A. Udden, 
who had still earlier discovered the petrified cycadeoid, named 
by the writer Cycadeoidea Uddeni , in the Upson shales of Mave- 
rick county, Texas. Of these two sole Texas cycadeoids the 
Bose specimen is rather the more interesting, because quite 
complete. 
These two new cycadeoids afford a complete contrast, in 
both space and time, for the North American distribution. 
They delimit the occurrence of the robust type of stem from the 
30th to the 54th parallels, and about through Cretaceous time. 
The occurrence in the Belly River beds appears to be the 
latest recorded from North America. But it is evident that the 
then rapidly disappearing cycadeoid type was still broadly 
distributed, as the very distinct species Cycadeoidea Uddeni 
of the Upson shale is little older. 
In the larger sense the finding of a cycad in the Trinity 
beds indicates a further geographic extension for the fine series 
of trunks from the lower Potomac of Maryland, and the Como 
cycads of the Freeze Out hills of Wyoming. The greater 
cycadeoid series, with marked specific variation, comes a little 
later in the Black hills, the collections being mainly from Minne- 
kahta and Piedmoht, with isolated occurrences in Colorado and 
California. In a few words, the known petrified cycadeoids come 
in with a certain abundance, quickly culminate in variety and 
number, and then after long continental distribution, these 
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