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PLATE I. 
PAGE 
Fig. 1. — Thinnfeldia taJhragarensis, n.sp. Specimen F3147 ... ... ... ... 9 
Fig. 2. — Thinnfeldia talbragarensis, n.sp. Specimen F3146 ... ... ... ... ... 9 
Figs. 3-6. — Coniopteris hymenophylloides, Brongn. Portions of characteristic sterile 
fronds. Specimens F3145, F12465, F12467, F12464 ... ... ... 7 
