J. S. Lee—An Outline of Chinese Geology. | 415 
Glossopteris indica, Anomozamites inconstans, Clathropteris platy- 
phylla. 
Middle Trias. Series of limestones with intercalated marls and a few 
sandstones, yielding a typical Muschelkalk and St. Cassian fauna, 
including the species Naticopsis undularia, Myophoria elegans, 
Torquemia difformis, Hncrinus liliiformis. 
Lower Trias. Variegated marls and sandstones with Myophoria, 
Anoplophora, Lingula metensis, ete. 
The succession of the Triassic rocks in the Great Red Basin of 
' Su-chuan and its neighbouring areas appears to be comparable with 
the above-described sequence, namely, a calcareous series inter- 
vening between two argillaceo-arenaceous series.!. On the northern 
border of the basin the lower argillaceo-arenaceous series seems, 
according to Richthofen’s report, to be absent.” 
True marine formation cf Lower Triassic age is definitely known 
in China only in two places ?: Leclere found a hard, dark limestone 
near Kwei-yang (about long. 106° 40’ E., lat. 26° 25’ N.) and Kai- 
tshou (about long. 107° E., lat. 27° N.) yielding fossils that are 
related to the fauna of the Lower Ceratites Limestone of Indo-China. 
Futterer observed a limestone containing Xenodiscus, Lecamtes, 
and being conformably succeeded downwards by a series of lime- 
stones, including the Doliolina Formation. 
Jurassic rocks occur * in the Sin-tai, Wei-hsien, Putschi basins, 
western Shan-tung; the Lai-yang Basin, eastern Shan-tung ; 
the Tsaitang and Tatung Basin, northern Shan-si and north-western 
Chi-li; the Kuei-chou Basin, eastern Su-chuan; the Great Red 
Basin of Su-chuan ; and the Yuan-kiang Valley, Kiang-si. They are 
generally composed of sandstones and shales frequently inter- 
calated with seams of coal of high economic value. Several varieties 
of Podozamites lanceolatus, together with Asplenium whitbyensis 
and other species of Liassic plant, are of frequent occurrence in the 
above-mentioned places. Dr. A. Smith Woodward describes several 
species of Lycoptera from Layang-hsien,® Shan-tung, and regards 
them as belonging to the Lower Jurassic. 
A Jurassic dolomite containing Pleuromya and Hologyra? is 
reported to occur in the Jao-pu district, south of Tchen-ning (Kwei- 
chou). It attains a thickness of more than 600 feet. According 
to Leclére the dolomite is underlain, near the Blue River, by a 
Rheetic coal-bearing series. The limestone that forms plateaus 
between Kwang-si and Kwei-chou, north of Jao-mong, is tentatively 
attributed to the same formation. 
In the Tatung Basin and on the western border of the Great Red 
1 Abendanon, Zeits. d. d. Geol. Gesell., vol. ix, pp. 197-208. 
2 China, vol. li, p. 603. 
3 Lecleére, loc. cit.; Futterer, Durch Asien, vol. ili, p. 131.. 
4 Lorenz, op. cit. ; China, vol. ii, pp. 193, 208, 292-9, 351-9; idem, vol. iii, 
p- 104; Denkschr. Akad. Wien, vol. lxx, pp. 189-54; Paleont., vol. xxxi, 
pp. 163-82; Journ. Coll. Sci. Imp. Univ. Tokyo, vol. xxi, art. 9. 
> Catalogue of Fossil Fishes Brit. Mus., pt. 1v, p. 3. The writer believes 
that the word “‘ Layang-hsien’’ should be spelt as “‘ Laiyang-hsien’’. 
