such usage. The generic concept of Taeniopteris was 
formulated by Brongniart” and the type of the genus is 
Taeniopteris vittata Brongniart. The description of a 
number of species since the work of Brongniart has ex- 
tended the concept to include petiolate leaves and bipin- 
nate fronds. The propriety of this inclusive interpretation 
is open to criticism. 
A score of Paleozoic Taeniopterids have been de- 
scribed. The so-called ‘‘species’” are poorly defined, al- 
though five specific alliances are easily recognized. All 
of them are characteristic of the Permian, despite the fact 
that a number of pre-Permian occurrences have been 
reported. Together they possess a broad northern-hemi- 
sphere distribution usually considered as ‘‘cosmopolitan. ”* 
Taeniopteris, in its broadest sense ranges from the Upper 
Carboniferous to Lower Cretaceous (or Neocomian). 
The specimen reported in this paper was found in 
the roof-shales of the Uniontown Coal, Monongahela 
Group (Upper Carboniferous) at Monongahela City, 
Fayette County, Pennsylvania. The specimen is number 
12455 in the Paleobotanical Collection of the Botanical 
Museum of Harvard University. Collected by Darrah, 
November 1933. ‘‘wo impressions of a ‘Taeniopteris are 
preserved in the dark gray, fine-grained shale. ‘They are 
of a single species which conforms to Taentopteris jeju- 
nata Grand’ Eury, and present no character upon which 
a specific separation may be based. Grand’ Eury’s plant 
is relatively abundant in the Stephanian and Rotliegende 
of France, Germany, Spain and Czechoslovakia. ‘The 
specimen also bears a relation to Taeniopteris lescuriana 
Fontaine & I. C. White. This form,’ together with a sec- 
ond,* 7. newberriana was described from material col- 
“1828 Prodr. p. 61; Hist. veg. foss. I. p. 262 
“Perm. Flora. p. 91. pl. 34. fig. 9, 9a 
“Ibid. p. 91. pl. 34. fig. 1-8 
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