942 CARLOS SAPPER 



to different horizons of the Upper Cretaceous, or whether they 

 are contemporaneous formations of different appearance. 



I found a fossil fish in a very fine-grained limestone which 

 resembles the lithographic stone of Solenhofen. The ancient 

 Indians used this stone in the construction of Palenque. 



In the strata which occur in the eastern part of Chiapas I 

 have not obtained fossils either along the road from Tenosique 

 to Real, or on the banks of the Usumacinta and Lacantun. Yet 

 I think that they are Cretaceous because in the eastern continua- 

 tion of the few sierras of Chiniquija, I have found in La Liber- 

 tad, department of the Peten, a few badly preserved fossils which 

 Geheimerat von Zittel, in Munich has examined and determined 

 to be Cretaceous. 



6. Cretaceous Marls and Clays. — Near Tuxtla Gutierrez and 

 Chiapa there are some deposits of marls and clays which contain 

 fossils, as yet not well studied, of the genera Heliopora, Leptophyl- 

 lia, Goniastrcea, Stylina, Cryptocce?iia and Turritella. They are of 

 an Upper Cretaceous horizon and more modern than the Creta- 

 ceous limestones on which they lie. I do not remember meeting 

 with these beds in any other part of the state. The strata of 

 this formation are a little inclined, or sometimes horizontal, as in 

 the valley of Tuxtla and Chiapa. 



7. Tertiary. — The Tertiary is found in many parts of the 

 northern and central regions of Chiapa and in the southern part 

 of Tabasco. In Tabasco the Tertiary is for the most part cov- 

 ered over with thin Quaternary strata. 



As I have said in the preliminary report of 1893, the majority 

 of the Tertiary is composed of marls and clays, sands and con- 

 glomerates while the limestones are of less importance. 



I repeat that I found in 1893 a species of Pecte?i near Zacu- 

 alpa, Ostreas, Nummulites, Clypeaster, and different gastropods, 

 lamellibranchs and corals near Sacramento, the Relcario, Testa- 

 quim and Istapa, belonging, as far as have been examined, some 

 to the Upper Miocene and some to a lower horizon. In 1889 

 I found near San Jose, department of the Comitan, remains of 

 plants and foraminifera which Mr. C. Schwager in Munich deter- 



I 



