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nux taurinensis Brongt, Mém. Mus. d’hist. nat. VIII p. 323. 
obtusifolia Heer, Flora tert. Helvetiae Bd. 3 p. 89. 
occidentalis Newb., Later extinct floras of North Amerika XXXV p. 34. 
oregomiana Lesq., Rep. foss. plants Sierra Nevada. Cambridge (1878). 
parschlugiana Ung., Syll. plant. foss. [Denkschr. K. K. Akad. Bd. 49] 
paucinervis Heer, Flora fossilis arctica (1868) p. 125. 
Plankoana Mass., Synopsis florae foss. senogalliensis. Verona (1858). 
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quadrangula Ludw., Foss. Pfl. jüngst. Wetterauer Braunk. [Palaeontogra- 
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rechinervis Ett., Fossile Flora Sagor in Krain [Denkschr. K. K. Akad. Bd. 37 
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regia L. Sap., Fl. tufs quatern. en Provence (1867) p. 16. 
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rhamnoides Lesq., Contrib. fossil flora western territories II (Rep. U. St. A. 
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Suffordiana Lesq., Trans. Amer. Philos. Soc. XXIII p. #21. 
salinarum Ung., Pflanzenreste im Salzstocke von Wieliczka [Denkschr. K. 
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sepultus Cocq., Bull. amer. Mus. nat. Hist. XXIV (1908) p. 80. 
Sieboldiana fossilis Nath., Bidrag till Japan’s fossila Fl. (Vega Expeditionens 
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Stoppanii Mass., Syn. fl. fossil senogall. Verona (1858). 
troxxiana Gaud., Feuilles fossiles de la Toscane (1858) p. 39. 
stygia Vis et Mass., Fl. de’ terr. terz. de Novale p. 34. 
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