328 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



tips obtuse; ncncs 4-7, parallel; niclrib rather indistinct, yet un- 

 doubtedly present in some leaflets. 



Type.— Cat. No. 34992, U.S.N.M. 



Locality. — Quarry one-fourth mile northeast of Carvers ville, Bucks 

 County, Pennsylvania; fragments fairly common in the dark gray 

 micaceous-sandy shales at this locality, but mostly poorly preserved. 



Horizon. — Lockatong formation;^ probably within a few feet of 

 the base. 



The lack of similarity between most of the plants of this locality 

 and those of York County, Pennsylvania (about 100 miles to the 

 southwest), as well as those of Virginia and North Carohna, is a note- 

 worthy fact. In the absence of exact means of correlation between 

 the beds of the several regions, it is not possible to decide whether 

 this is due to geographic or to stratigraphic separation; but there 

 is nothing about any of the forms occurring here to cast doubt on the 

 correctness of the usual assignment of the Lockatong formation to the 

 Middle Triassic. 



2. A PLANT OF UNKNOWN AFFINITY FROM NORTHERN BUCKS 

 COUNTY. 



About a mile south of the to\\'n of Sellersville a lens of green to 

 black shale some 50 feet in thickness occurs in the midst of the usual 

 soft red sediments (Brunsv,nck shale) of the region. Where cut by the 

 Philadclpliia & Reading Railway line this shale contains the remains 

 of a plant wliich is so deiinite that it seems worth description, even 

 though its systematic position is indeterminate. Scattered frag- 

 ments of what is apparently the same form occur in similar beds 

 along tliis railroad in Lehigh County, three-fourths mile northeast of 

 Coopersburg station. Fragments of what may be the same plant 

 occur in the Cumberland area, North Carolina,^ and elongated leaves 

 resembling those of the present plant in York County, Pennsylvania.^ 

 As pointed out by Ward, a generic name which carries with it no 

 systematic implications is desirable for such material, and as it is 

 very unusual to find determinable fossil plants in the Brunswick 

 beds, the name Brunswickia seems the most appropriate. 



1 Professor Brown, at the time of the publication of his paper, had not visited the locality, but as the map 

 of the Second Pennsylvania Geological Survey shows the rock, at the point where the quarry was reported 

 to be, as "Norristown shale" (now termed Stockton formation). Professor Brown gave this as the horizon 

 of the occurrence. The matrix of the fos-sils is, however, like what has been described as the " Gwynedd " 

 (Lockatong formation), and on visittag the quarry in 1912, the present writer found it to lie within that 

 formation, although not far above its base. Tliis correction is here emphasized because of the desu-ability 

 of locating as exactly as possible the horizons at which fossils occur in the comparatively unfossiliforous 

 Triassic beds. 



J Fontaine, Mon. 6, U. S. Geol. Survey, \9&\ p. 90, pi. -38, fig. 4. 



3 York iagraminoide^, Wanner and Ward, 20th Ann. Rept., U. S. Geol. Survey, 1900, pt. 2, p. 264, pi. 34. 



