252 Systematic Paleontology 



Occurrence. — Patuxent Formation. Fredericksburg, Cockpit Point, 

 Potomac Eun, Virginia. Arundel Formation. Arlington (?), Mary- 

 land. Patapsco Formation. Vinegar Hill, Maryland. 



Collections. — U. S. National Musenm, Groucher College. 



Cladophlebis Albertsii (Dunker) Brongniart , 

 Plate XXXII, Figs. 3, 4 



Neuropteris Albertsii Dunker, 1846, Mon. Norddeutsch. Wealdenbildung, 



p. 8, pi. vii, figs, 6, 6a. 

 CladophleMs Albertsii Brongniart, 1849, Tableau, p. 107. 

 Neuropteris Albertsii Unger, 1850, Gen. et Sp., p. 83. 

 Neuropteris Albertsii Ettingshausen, 1852, Abh. k. k. geol. Relchs., Band i, 



Abth. iii, p. 12. 

 Alethopteris Albertsii Schimper, 1869, Pal. Veget., tome i, p. 570. 

 Pecopteris Whitbiensis Trautscbold, 1870, Nouv. Mem. Soc. Nat. Moscou, 



vol. xili, p. 27, pi. xix, fig. 2. 

 Alethopteris Albertsii Schenk, 1871, Palseont., Band xix, p. 218, pi. xxvii, 



fig. 4. 

 Pteris ? Albertsii Hear, 1882, Fl. Foss. Arct., Band vi, Abth. ii, p. 29, pi. 



xvi, figs. 5, 6; pi. xxvili, figs. 1-3; pi. xlvi, figs. 22-24. 

 Pteris Albertini Velenovsky, 1888, Abh. k. bohm. Ges. Wiss., Band ii, p. 15, 



pi. iv, figs. 6-10 (non fig. 5). 

 Cladophlebis inclinata Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, 



p. 76, pi. X, figs. 3, 4; pi. xx, fig. 8. 

 Cladophlebis denticulata Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 



1889, p. 71, pi. iv, fig. 2; pi. vii, fig. 7 (non Nathorst). 

 Cladophlebis sp., Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, p. 77, 



pi. X, figs. 5, 8; pi. XX, fig. 7. 

 Cladophlebis pachyphylla Fontaine, 1890, Mon. U. S. G^ol. Surv., vol. xv, 



1889, p. 80, pi. XXV. fig. 9. 

 Cladophlebis sp., Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, p. 77, 



pi. XV, fig. 6; pi. xix, fig. 3. 

 Aspidium Oerstedi ? Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 1889, 



p. 99, pi. xix, fig. 4 (non Heer). 

 Aspidium angustipinnatum Fontaine, 1890, Mon. U. S. Geol. Surv., vol. xv, 



1889, p. 98, pi. xvi, figs. 1, 3, 8; pi. xvii, fig. 1; pi. xix, fig. 10. 

 Cladophlebis Albertsii Seward, 1894, Wealden Fl., pt. i, p. 91, pi. viii. 

 Bryopteris angustipinnata Knowlton, 1898, Bull. U. S. Geol. Surv., No. 152, 



p. 91. 

 Bryopteris Oerstedi ? Knowlton, 1898, Bull. U. S. Geol. Surv., No. 152, p. 92. 

 Bryopteris angustipinnata Fontaine, 1906, in Ward, Mon. U. S. Geol. Surv., 



vol. xlviii, 1905, pp. 540, 544, 548, pi. cxiv, fig. 6. 

 Cladophlebis Albertsii Berry, 1911, Proc. U. S. Natl. Mus., vol. xli, p. 310. 



