238 . ME60Z01C FLUKAs; OF UMTED STATES. 



SAGENOPTEHia i sp. Foiitaino. 

 PI. l.XV, Fig. -16. 



1894. Saffi'nopieris .sp. if Font, in Dillcr & Stanton: liull. (icol. Soc. Am., Vol. Y, 



p. 4.50 (noiniMi.). 

 l.Sil.") [1S<)()]. Sagenoptcris sp. Font, in Stanton: Bull. U. S. Gcol. Snrv.. No. 133, 



]). 1.") (noinon.). 



At locality .\(>. 9 occur sevci'al iinprcssioiis of a fci'ii which i.s appai'- 

 eiitly a Sagenopteris, but the leaflets are too imperfect and tiie nervation 

 is too poorly shown to permit its spe(ufic character to he made out. The 

 character of the anastomosis of the nerves is similai' to that of S. elliptica, 

 of the Lower Potomac of Virginia, but the nerves are stronger. This 

 plant may be identical with soirie of the ferns with reticulated nervation 

 in the Great Falls flora that Doctor Newberry ])laced with great hesitation 

 in the genus Chiropteris. He seems to have separated them from Sage- 

 nopteris, with which genus, as it seems to me, they best agree, solelx- on 

 account of the sparing anastomosis. But this, in th(> (Ireat l'\alls fossils, is 

 hardly less frequent than in>.S. eUiptica of the Lower Potomac, and Doctor 

 Newberry's Chiropten's spnlulatd is mtich like Sru/oinptcnH elli/)tic<i. 



Geiui.s IIAUSMANNIA Dunkcr. 



HaUSMANNIA ^ CAI.IKOKNICA Kolllaiuc 11. .sp. 



I'l. bXV, Fig. 47. 



A .single .specimen of a plant of doulitfid character was foiuid at 

 locality No. 18 in the Knoxville beds. It is a portion of the lower i)ait of a 

 leaf that seems to have narrowed to its base. As the full width of t he leaf 

 is not pre.serve(l and the margin is apparently not entire in any {portion, it 

 is not possible to determine its original form. The plan of the nervation 

 indicates a flabelhite and digitately lobed leaf, but if it were lobed after the 

 fashion of llansmaimia it was not cut into such nari'ow lacinia? as Dunker's 

 Hausmannia diclinldiHd ," for the fi'agment obtained, although not so broad 

 as it was originally, shows no subdivision, and it is wider than aii\' of the 

 .segments of Dunker's plant. The nervation shows several nerves of ecjual 

 sti-ength and not dimini.shing in size by division. These nerves converge 

 toward the base of the leaf so as apparently to imite, while in the or)posite 



" yUymiiii. (I. .NorddciiUcli. Wfiildoiiliilduiii;, p. 12, |)l. v, (ig. 1 ; jii. vi, li;;. 12. 



