NO. IS"; 



CHARACTERS OF GIOANTOPTERTS— WHITE. 



507 



Provisional List of the Fossil Plants from Petry (P) and Eddy (E), Ohlahoma. 



Equisetites, sp., E. 

 Annularia stellata, P. 

 Sphenophyllum ohovatuiu, E. 

 SphenoplnjUuin cf. latifolhna, P. 

 SphcnopJiylhun sfouhoihctyi? P. 

 Sigillana, sp.?, P, E. 

 Walchia inibricata? P. 

 Walchia cf. gracilis, E. 

 Araucarites, sp., P, E. 

 Carpolithes, E. 



Diplothmema paehydenna, E. 

 Pecoptens cyathea, P. 

 Pecopteris (/einifzi, P. 

 Callipteris, sp., E. 

 Grigantopteris ainerieaiia, E. P. 

 Odontopteris cf. 2>crtniensis, E. 

 Neuropteris, sp., E. 

 Tftniiopteris vudfinervis, P. E. 

 Tfvniojfferis ahnortnis, P. 

 Tfenioptcris, sp., E. 

 DolerophyUum?, sp., E. 



All tlie species quoted above occur in beds regarded as Permian in 

 the Old World, except two, one of which, S'plieno'pliyllum, ohovatum, 

 is present in the Permian of Kansas (Welhngton formation), while the 

 Diplothmema is found in the Dunkard of West Virginia. Several of 

 the Perry species that are known also to occur in the Pennsylvanian 

 have not been found in the higher horizon, at Eddy. The smaller 

 number of fihcoid survivors in this flora as compared with the Fulda, 

 Texas, flora is perhaps due to the less distinctly marsh habitat m 

 which they grew and v/ere buried. The Araucarites scale-fruit is 

 identical in both regions. As in the preceding list the types distinctly 

 characteristic of the Permian are printed boldface. 



It is interesting to note the probable presence in the Oklahoma 

 Gigantopteris ^ association of a Splieno'phyllum. and an Odontopteris 

 hitherto unknown except in the Uralian region. The fragments of 

 Tseniopteris and Gigantopteris are very abundant in some of the sand- 

 stones at both localities. The evidence for the lower Permian age of 

 these two Oklahoma plant beds needs no further discussion in this 

 place. 



The Kansas Permian plants. — The fossil plant materials here 

 reported for the first time, in a prehminar}^ way and with pro\'isional 

 determinations of the species, were mostly collected in the course of 

 two short paleobotanical reconnoissance excursions for the purpose 

 (1) of securing fossil plant evidence of a decisive nature relating to 

 the mooted question of the age of the Chase group and Sumner group 

 in Kansas, and of the Wicliita formation in Texas; and (2) to procure, 

 if possible, fossil plants in the Rocky Mountain region from the great 

 "red beds" series, over 6,000 feet in thickness, the age of the greater 

 part of wliich has, on account of failure to yield fossils, been largely 

 the subject of mere supposition. On account of the interesting light 

 some of the forms collected throw on the distribution of a number of 

 plants characteristic of the Urahan region or of western Europe I 



' The discovery of Gigantopteris m Oklahoma, at Perry, is due to the geological interest of Mr. L. L. 

 Hutchison, of that place. 



