430 Systematic Paleontology 



latter, to which it is at least very closely allied. The variety angusti- 

 folium Fontaine is not distinguishable from the type and is based on 

 specimens slightly more slender than the average, but readily matched 

 in the material which that author refers to the type species. Glypto- 

 strohus ramosus (Font.) Ward is clearly identical with the other forms 

 of Fontaine's which are included in this species and comes from the 

 same outcrops with the exception of certain material from the Kootanie 

 at G-reat Falls, Montana which Prof. Fontaine has identified as Glyptos- 

 trohus ramosus but which is in all probability Glyptostrobus grcelandi- 

 cus Hear and not identical with the Potomac species, although detached 

 twigs of the two may and do show considerable similarity. 



The material from the Fuson formation of eastern Wyoming which 

 Fontaine referred to his Olyptostrohvs hroohensis, a synonym of Wid- 

 dringtonites ramosus, is clearly identical with Sphenolepis Kurriana 

 (Dunker) Schenk which occurs in the same beds with it and quite 

 different from the species under discussion. 



Widdringtonites ramosus is a characteristic species of the Patapsco 

 formation both in Maryland and Virginia and occurs in considerable 

 abundance at ' numerous localities. It is undoubtedly the ancestor of 

 Widdringtonites Reichii (Ettings.) Heer of the Raritan and Magothy 

 formations. 



Stomata of the same general type as those described by the writer in 

 Frenelopsis ramosissima (see supra), but confined to certain areas on 

 the tiny crowded leaves, are described by Caspary for Widdringtonites 

 ohlongifolius Goeppert and Meng., a Tertiary relative of these Lower Cre- 

 taceous forms.'' 



Occurrence. — Patapsco Foemation. Ft. Foote and Overlook Inn 

 Eoad, Stump Neck, near Wellhams, Vinegar Hill, Maryland ; Mt. Vernon, 

 Hell Hole, White House Bluff, near Brooke, 72-mile post, Virginia. 



Collection. — U. S. National Museum. 



^Abhandl. k. Preuss. Geol. Landes., neue folge, Heft iv, 1907, p. 66: Atlas, 

 pi. ix, see especially fig. 53c. 



