124 The Lower Cretaceous Floras of the World 



others which are tentatively identified with them. The upper or Horse 

 town beds have furnished the following flora : 



ELOIU OF THE HORSETOWN BEDS 



AMetites macrocarpus Fontaine 

 AcacioepJiyllum ellipticum Fontaine* 

 Angiopteridium canmorense Dawson ? 

 Angiopteridium strictinerve latifolium Fontaine 

 Gephalotaxopsis magnifolia Fontaine ? 

 Cladophlebis Browniana (Dunker) Seward 

 Gladophlebis heterophylla Fontaine 

 Ctenopsis latifolia (Fontaine) Berry 

 Gycadeoidea Stantoni Ward 

 Dioonites Buchianus (Ettings.) Born. 

 Dioonites Buchianus abietinus (Font.) Ward 

 Dioonites Dunkerianus (Goepp.) Miq. 

 Gleichenia Gilbert-Thompsoni Fontaine 

 Menispermites californicus Fontaine ^ 

 Nageiopsis longifolia Fontaine ? 

 Nilsonia oregonensis (Fontaine) Berry 

 Phyllites Fontainei Berry 

 Pinus shastensis Fontaine 

 Populus ? Ricei Fontaine^ 

 Sagenopteris elUptica Fontaine 

 Sagenopteris nervosa Fontaine 

 iSagenopteris oregonensis Fontaine 

 Saliciphylliim calif ornicum Fontaine * 

 Saliciphyllum pachypJiyllum Fontaine * 

 Sequoia ambigua Heer 

 Sequoia Reichenbachi (Gein.) Heer 

 Sphenolepsis Sternbergiana (Dunker) Schenk 

 Zamites tenuinervis Fontaine 



The conifers are more abundant than in the Upper Knoxville beds, 7 

 species being recorded. There are 9 cycads and 6 ferns, as well as 4 

 more or less vague angiosperms. Nine species are identical with Potomac 

 forms. 



*Not an Angiosperm and unrelated to Potomac species referred to this 

 genus by Fontaine which prove to be identical with Thinnfeldia. 



^ This is probably an Angiosperm but there are no visible characters which 

 warrant its reference to this genus. 



* This looks like a fragment of a Dicotyledon but is unidentifiable ge- 

 nerically. 



* These two forms might belong to any division of vascular plants. They 

 are probably Angiosperms but do not even show venation characters. 



