130 The Lower Cretaceous Floras of the World 



of this flora has been commonly accepted as TJrgonian (Barremian) since 



Schenk's publication. The recorded species include : 



Baiera cretosa Schenk 

 Cedroxylon Schenk 

 Chondrites furcillatus Roemer 

 Confervites setaceus Ettingshausen 

 Cycadites Brongniarti Roemer 

 Cycadites Heerii Schenk 

 Cycadopteris Dunkeri Schenk 

 Cyclopteris squamata Ettingshausen 



Gunninghamites elegans (Corda) Endl. (not this species) 

 Dioonites Buchianus (Ettingshausen) Born. 

 Eolirion primigenium Schenk 

 Eguisetum Burchardti Dunker 

 Frenelopsis HoJieneggeri (Ettingshausen) Schenk 

 Lonchopteris recentior (Ettingshausen) Schenk = WeicTiseZia ? 

 Onychiopsis psilotoides (Stokes and Webb) Ward 

 Podozamites HoJieneggeri Schenk 

 Podosamites obovatus Schenk 

 Podozamites Zittellii Schenk 

 . Sagenopteris Mantelli (Dunker) 

 Sargassites Partschii Ettingshausen 

 Sequoia Reichenhachii (Geinitz) Heer 

 Sphenolepis Sternbergiana (Dunker) Schenk 

 Twniopteris zoMngiana Ettingshausen 

 Widdringtonites gracilis Heer ? 

 Zamites afflnis Schenk 

 Zamites Gcepperti Schenk 

 Zamites nervosus (Ettingshausen) Schenk 

 Zamites ovatus Schenk 

 Zamites pachyneurus Schenk 



The flora includes 3 algffi, 1 equisetum, 5 ferns, 2 ginkgos, 11 cycads, 

 and 5 conifers. The remarkable Eolirion, which has been suggested as 

 representing a survival of the Paleozoic Cordaites, and which Saporta 

 regarded as a Proangiosperm, is one of the features of this flora. Seven 

 of the species are present in the Potomac flora and others are closely 

 allied types. 



Steinmann ^ has described a calcareous alga, Boueina Hoclistetteri 

 Toula^ of the family Codiacese from the Upper Neocomian limestone 



* Steinmann, Ber. Naturf. Gesell. z. Freiburg, Band xi, 1899, pp. 62-72. 

 ' Toula, Sitz. k. Akad. Wiss., Wien, Ixxxiii, 1, 1883, pp. 1319-1324, pi. v, fig. 10, 

 pis. vii-ix. 



