INDEX 



99 



Macnair, P., 29 



Maine, 6, 13 



Mariopteris, 84 



Marwood Beds, 7 



Medullosa, 78 



Megaphyllous ancestry of Spheno- 



psida, 71 

 Megaphylly of Pteropsida, 73, 78 

 Melobesia lichenoides, 39, 40 (Fig. 



21) 

 M. membranacea, 40 (Fig. 21) 

 Mesozoic, 87 

 Microphylly, of Arthrosiigma, 72 ; of 



Coniferae, 71 ; of Lycopsida, 73 ; 



of Psilotales, 87, 88; of Spheno- 



psida, 73 

 Miller, Hugh, 14 

 Mimers-Thal, 6 

 Murchison, R. I., 3 



Nathorst, A. G., 2, 3, .'>, 13, 29, 37, 



43, 64 

 Ncmahon, 50 

 Nematophycus, 8, 13, 89 

 Neuropteris, 84 

 New Brunswick, 6 

 New South Wales, 6, 13 

 New York State, 6, 13 

 Newberry, J. S., 37 

 Newcastle coal field, US 

 Nicholson, H. A., 75, 76 

 Noeggerathia hi f urea, 12 

 Norway, 2, 5, 6, 7, 12, 26, 29, 37, 



43, 44, 54, 56, 58 



Ohio, 13 



Old Red Sandstone, classification in 



Scotland, 3-5; correlation with 



Devon facies, 4 

 Ordovician, 75, 76 

 Onteolepis, 4 



Pachytheca, 8 

 Palaeophyeus gracilis, 12 

 PalaeophvUale's, 9, 10, 56-58, 78-84 

 Parl,a decipiens, 2, 3, 8, 10, 11, 38, 



39 (Fig. 20), 40, 46, 47 

 Parkin, J., 84 

 Pecopteris, 83 



Pecopteris plumosa, 83 (Fig. 47) 

 Penhallow, D. P., 14, 29, 30 

 Perieaulome, 70, 73, 77, 78, 86, 87, 



88 

 Permian, 69 

 Permo-carboniferous, 58 

 Perry Basin (S.E. Maine), 6, 13 

 Phyllineae, 71, 74 

 Phylloideae, 71, 74 

 Polysiplionia, 73, 78 



Portage group, 13 



Potoni6, H., 12, 30, 35, 50, 70, 73, 



78,84 

 Poudingue de Burnot, 5, 7 

 Primofilices, 71, 81, 84^85 

 Procormophyta, 1, 47, 49, 51, 76, 82 

 Prohepaties, 70, 71 

 Prolycopods, 71 

 Propteridophyta, 1 

 Protannularin laxa, 75 (Fig. 41) 

 P. radiata, 76 



Protolepidodendron, 10, 12, 42, 85 

 Protolepidodendron karlHeini, 42 

 P. Seharyanum, 12 

 Psammites du Condroz, 5, 7 

 Pseudobornia, 9, 54 (Fig. 26), 56, 



76, 77 , 

 Pseudobornia ursina, 12, 54 (Fig. 



26) 

 Pseudo-dichotomy of Palaeozoic Ly- 



copods, 86 

 Pseudosporochnus, 10, 12, 33 (Fig. 

 15), 34 (Fig. 16), 35, 47, 50, 81 

 Pseudosporochnus Krejcii, 33 (Fig. 



15), 34 (Fig. 16) 

 Psilophy tales, 47 



Psilophyton, 5, 6, 8, 9, 10, 11, 12, 13, 

 15 (Fig. 1), 16 (Fig. 2), 17 (Fig. 

 3), 18 (Fig. 4), 19 (Fig. 5), 20, 

 21 (Fig. 6), 22-25 (Fig. 7), 26, 

 37, 43, 44, 46, 47, 48, 49, 70, 71. 

 74, 76, 85, 86, 88, 89, 91 

 Psilophyton Flora, affinities, 46-51 ; 

 distribution of chief genera in 

 Devonian time, 9, 10; morpho- 

 logy and and.tomy, 14-45; peri- 

 eaulome structure in, 78, 87. See 

 also 1, 2, 8, 9, 10, 11, 12 

 Psilophyton Dechianum, 17 

 P. elegans, 19, 20 

 P. Goldschmidtii. 21 

 P. ornatum, 11, 18, 22 

 P. princeps, 10, 11, 17 (Fig. 3), 18 

 (Fig. 4), 19 (Fig. 5), 20, 21 

 (Fig. 6), 22, 24, 25 (Fig. 7), 46 

 P. robustius, 11, 19, 20 

 Psilotales, 47, 86-88 

 Psilotum, 49, 87, 88 

 Psygmophyllum, 9, 10. 12, 13, 55 



(Fig. 27), 56, 58, 78, 79 

 Psygmophyllum Brownianum, 13 

 P. Kolderupi, 55 (Fig. 27) 

 Pteraspis, 4 

 Pterichthys, 4 



Pteridop'hyta, 1, 52, 71, 72, 89 

 Pteridorachis, 43 

 Pteridospermeae, 69, 72, 81, 85 

 Pteropsida, 9, 10, 71, 72, 73, 77, 

 78-85, 87 



