STRATIGRAPHY OF SHAN-TUNG. 33 
The upper portion of the limestone consists of an alternation of dark 
oolites, mottled ocherous limestones, and gray crystalline or aphanitic 
limestones, several layers of which are fossiliferous. In the basal layers 
of this upper series we found, at Ku-shan, abundant fragments of: 
Artonellus alala Walcott Ptychoparia (Liostracus) intermedia Walcott 
Arwonellus sp. undt. Solenopleura acidalia Walcott 
Menocephalus adrastia Walcott Solenopleura agno Walcott 
Menocephalus agave Walcott Shumardia sp. undt. 
Menocephalus sp. undt. 
About 100 feet, 30 meters, higher, another meager fauna makes its 
appearance. The only identifiable remains are those of: 
Stenotheca rugosa orientalis Walcott Solenopleura sp. undt. 
Crepicephalus danua Walcott 
In the dark gray oolitic layers, about 400 feet, 120 meters, above 
the base of the Ch’ang-hia formation and nearly equivalent to the last 
horizon, some of these forms reappear in company with others not encoun- 
tered in the lower strata. This lot includes: 
Scenella clotho Walcott Crepicephalus damia Walcott 
Platyceras chronus Walcott Menocephalus acervus Walcott 
Stenotheca rugosa orientalis Walcott 
Scarcely 20 feet, 6 meters, higher is a light gray, crystalline limestone, 
in which abundant, although fragmentary, remains of the following occur: 
Stenotheca clurius Walcott Arwonellus alala Walcott 
Another lot about the same horizon, in a section scarcely a mile away, 
adds to the list Zenocephalus acts Walcott. 
The uppermost layers of the Ch’ang-hia formation, through a thick- 
ness of 50 to 100 feet, 15 to 30 meters, are dense gray limestones, with many 
conglomeratic strata. Within this thickness several lots of fossils were 
secured, which, when combined, yielded the following list of species. The 
two trilobites Anomocare? daulis and Dorypyge richthofent are among the 
most abundant and characteristic species at this horizon. 
Acrotreta liant Walcott Ptychoparia (Liostracus) tutia Walcott 
Hyolithes cybele Walcott Ptychoparia (Liostracus) trogus Walcott 
Anomocare? daulis Walcott Solenopleura abderus Walcott 
Anomocare temenus Walcott Solenopleura acantha Walcott 
Anomocarella? bura Walcott Solenopleura agno Walcott 
Damesella brevicaudata Walcott Artonellus alala Walcott 
Dolichometopus deots Walcott Crepicephalus damia Walcott 
Dolichometopus dirce Walcott Crepicephalus, cf. Crepicephalus magnus Walcott 
Dorypyge richthofent Dames Agraulos divi Walcott 
Menocephalus belenus Walcott Agraulos agenor Walcott 
_ Menocephalus admeta Walcott 
