INDEX 



99 



Macnair, P.. 29 

 Maine, 6, 13 



Muriofilcris, 84 



Marwood Beds, 7 



Medullosa, 78 



Megaphyllous ancestry of Spheno- 



psida, 71 



Megaphylly of Pteropsida, 73, 78 

 Metobesia lichenaides, 39, 40 (Fig. 



21) 



M. membranacea, 40 (Fig. 21) 

 Mesozoic, 87 

 Microphylly, of Arlhrostigma, 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, 5, 13, 29, 37, 



43, 64 

 Nemalion, 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. 58 

 Nicholson, H. A., 75, 76 

 Nocggerathia bifurca, 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 

 Osteolepis, 4 



Pachytheca, 8 

 Pdlaeophycus gracilis, 12 

 Palaeophyllales, 9, 10, 56-58, 78-84 

 Par/i 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 

 Pericaulome,' 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 

 Polysiphonia, 73, 78 



Portage group, 13 



Potonie, 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 

 Prohepatics, 70, 71 

 Prolycopods, 71 

 Propteridophyta, 1 

 Protannularia laxa, 75 (Fig. 41) 

 P. radiata, 76 



Protolepidodendron, 10, 12, 42, 85 

 Protolepidodendron karlsteini, 42 

 P. S chary anum, 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 anatomy, 14-45; peri- 

 caulome 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 



