PLANT-BEARIKG OUTCROPS. 57 



Feet. Nyssa wilcoxiana, 



S}iale, dark gray, with sandy layers 6 Oreodaphne coushatta. 



Shale, arenaceous, gray 2 Oreodaphne mississippiciisis. 



Sandstone and shale, ferrnfrinous jx'hliles and eon- Oreodaphne obtusifolia 



cretions 5 Per.-ea lonjfipetiolatum. 



Sandstone, medium trrain, soft, yellow 3 Pislia wileoxensis 



Shale, sandy, fine -rained, cray 6 Protooi.les ^^•ik■oxensis. 



„,...., , „ „ V. . Prunus nabortensis. 



Part of the log of a well near Naborton. 



Pteris ])soudopinn;el'ormis, 



G>'i"'^" IS Rhamnus eoushatta. 



Sand and bowlders 4 Hhamnus eoligniticus. 



<^'"™l"' ~ Sabalites <;rayanus. 



Shale and rocks 123 Sapindus formosus. 



Shale, gumbo, and rock 259 Sapindus linearifolius. 



Gumbo and howlders 45 Sophora wilcoxiana. 



Base of Wilcox (?), Sterculia pnrvearensis. 



Sterculiocarpus eoeenieus. 

 The fop of the Wilco.x is not, shown in lllis Tenninalia hilgardiana. 



SCCti.in, but it is exposed, and (he overlvin- Ter.ninalia lesleyana. 



^„ ., , , ^ • 1 ,- , ■ 1 Ternstrtrmites ovatus. 



Chuhorne has been recognized further south, Vanianea wilcoxiana. 



near Natchitoches. The whole Wilcox in this Zamia (?) wileoxensis. 



vicinity is about 800 feet thick, and the fossil ,.(•. ,, ■ * i • ,i 



, • 1 T.T 1 . 1- 1 ■ I'lltv-lhree species are enumerated in llie 



plants around JNaborton are found in a zone j. • i- , V- i ^ i- ^ .i • 



' . , , ■ - . , r , 1 loregoing list. iLight are peculiar to this area 



commencing at a horizon o42 ieet above the i^i i- ^i i ,. ..i ■. r 



1 r ii fT-i 1 ,• 1 and tmee range trom the base to the sunimil ol 



base ot tlte Wilcox and extending about 120 ^, xxt., mi i r i ^ ■ .■ r 



, , '^ the Wucox. Ihe only torm characteristic ol 



rr^^ 1- ,, ■ p , , -, ■ ,. , tlic lowcr Wllcox Is thc doubtfullv determined 



ihe loUowmg lornis have been identuied: t i- rrn ., ■ ' i ■ i ■ .i 



^ Lygotluun. there are 3 species whicli m the 



Anona ampla. eastern Chilf area are confined to the lower 



, ".,'' . " and middle Wilcox, 16 which are confhied to 



Anona wilcoxiana. ' 



ApocjTiophyllum tabellarum. ^lie middle Wilcox, and 12 which arc confined 



ApocjTiophyllum wilcoxense. to the upper Wilcox. It is obvious that the 



Araceseites friteli. horizon is very near that of Puryear, Tenn., 



Artocarpusdubia. namely, at the top of the middle WUcox. 



Artocarpus pungens. mi n" i i i j.- i^ r 



T, 1, i •," ihe llora shows an almost entu-e absence of 

 iiombacites wilcoxianus 



Cinnamomum affine. Legunuiiosas and a surpnsmg number of 



Cinnamomum oblongatum. Lauraceae. 



Conocarpus eoligniticus. The section derives its chief importance 



Cornus studeri. fj.,,^,^ ,l,,, j-.,,.^ ^[^.^^ ^j,^, stratigraphic interpre- 



Cupanites eolisniticus. ^ . , ,, i i ^ ■ -i i 



Dillenites microdentatus. ^='^""' =""' ""' P^lw^otamc evidence corrob- 



Dryophyllum amplum. 01"^^ *':ich other in showing that m this part 



Dryophyllum tennesseensis. of the western Gulf area approximately 500 



Ficus harrisiana. feet of earlier Wilcox sediments are trans- 



Ficus neoplanicostata. gressed by later Wilcox deposits, thus corrob- 



Seus''lembf\\dr'^™''' orating the interpretation of the geologic 



JugUnfldiimiri.'''' ^'^^""''y Pi-esented elsewhere (pp. 30-38). 



Lygodium biner^•atum. SECTIONS IN TEXAS. 



Magnolia angustifolia. 



Meniphylloides ettingshauseni. ^^jp j,,„;.p (..^pi.o landing, HARRISON COUNTY. 



Menispermites wileoxensis. 



Mespilodaphne pseudoglauca. The following section at Old Port Caddo 



Nectandra lanoifolia. Landing, in Harrison County, Tex., is given 



Nectandra pseudocoriacea. t>,. \'.,,i,,.l..>,, ■ i 



. L) y * (iiiiiiitiii . 



Nectandra puryearensis. 



Nectandra sp. i Vaughan, T. W., Am. Geologist, vol. 16, pp.304, :0.5, 1S95. 



