26 RIO GRANDE COAL FIELDS OF TEXAS. [bull. iw. 
Lunatia sp. 
Natica sp. Occurs at Kaufman, Texas. 
Fusus sp. Occurs at Corsicana, Texas. 
Fusus sp. 
Tritonium ? sp. Occurs at Corsicana, Texas. 
Trophon ? sp. Occurs at Corsicana, Texas. 
Olivella sp. 
This fauna seems very closely related to that found 2 miles north of 
Eagle Pass on the Uvalde road, but Sphenodiseus pleurisepta, which 
usually characterizes the upper beds, is absent. The stratigraphic 
position of the exposure near the Burr ranch has not been definitely 
determined, but it would seem to be considerably below the fossiliferous 
horizons in the bluffs east of Eagle Pass. 
From Paloma to Thomson's siding sands and clays outcrop in the 
draws, and gravel usually caps the hills. 
Escondido beds.— Dumble (op. cit.) has proposed the name "Escon- 
dido beds " for the sandstones and clays occurring above the Coal series. 
The following sections and notes describe them. (PL II.) 
Just east of the railroad, on the eastern side of Eagle Pass, is an escarp- 
ment about 90 feet high, the rocks having a strike due north-south mag- 
netic, and a dip 3° E. This escarpment is composed at the top of a few 
feet of soft, yellowish sandstone, underlain by ledges of hard, brownish, 
ripple-marked sandstone, which is followed by a slope composed of 
some clays, but chiefly of soft, yellowish sandstone. The fossils col- 
lected on the Uvalde-Eagle Pass road, 2 miles above Eagle Pass, belong 
in the lower part of the slope of this section (see p. 30). The detail of 
the section is as follows: 
Section on slope near railroad on the east side of Eagle Pass. 
Feet. 
5. Soft sandstone 10 
4. Hard brown or yellowish sandstone 3 
3. Soft yellowish sandstone lor 2 
2. Ledges of hard sandstone, with some soft sandstone 15 
1. Sandy clay and soft, greenish-yellow sandstone to base of escarpment, clays 
preponderating 60 
Total 90 
From No. 2 the following fossils were obtained (locality No. 273): 
Ostrea, two species. 
Anomia sp., a minutely costate species. 
Inoceramus cripsi var. barabini Morton. 
Cardium sp. 
Pholadomya n. sp. 
Turritella sp. Cf. T. saffordi Gabb. 
"The only species identified in this lot is widely distributed in the 
Ripley and Montana formations." (Stanton.) 
This bed contains an oyster ledge and is the base of Dumble's Escon- 
dido beds. 1 
i Bull. Geol. Soc. America, Vol. Ill, 1892, p. 228. 
