﻿33 Sections 7 



A 3 . 3 ft. i in. In the bed of the creek which flows across the 

 road north of the Methodist church in Tribes Hill village, 6o 

 yards above the stone bridge and 4 feet below the top of the 

 bridge the Calciferous limestone is exposed. In hand specimens 

 the rock looks like a fairly pure limestone with occasional sand}'' 

 seams. Some layers are conglomeratic and contain water-worn 

 pebbles. The fauna is as follows : 



Ribciria nuculitiformis a. Asaphus canalis (?) cr. 



Bathyurus (?) ellipticus cr. Harrisia parabola r. 



Raphistoma obtusa ca. Dahnanella wemplei cr. 



Callograptus salteri (?) r. Crinoid stems and plates r. 



A 4 . 7 ft. 5 in. Rock more arenaceous than the last. Fossils 

 rare. Ecculiomphalus multiseptarius is quite common near the 

 upper portion. Natural sections of gasteropods are fairly com- 

 mon in the wall of the quarry. 



A s . 2 ft. 6 in. This is the extremely fossiliferous bed which 

 also occurs at Ft Hunter and Canajoharie. The rock is more or 

 less conglomeratic and oolitic and falls to pieces on weathering. 

 Upon exposure the rock changes from a compact blue limestone 

 to a loose iron stained rock from which the fossils, especially 

 Ribciria nuculitiformis, are easily broken out. The iron stains 

 are due to the oxidation of pyrite, which is plentiful in the rock. 

 Many of the specimens seem to be water-worn. The species 

 found are : 



Ribciria nuculitiformis a. Pleurotomaria hiinterensis r. 



R. turgida cr. Pleuroto?naria sp. cr. 



Harrisia parabola r. Ecculiomphalus utultiseptarius r. 



Bathyurus (?) ellipticus r. Dalm.anella wemplei r. 



B. levis r. Orthocera s primigenium (?) r. 



Ophileta levala c. Crinoid stems r. 



A 6 . 4 ft. The light gray fucoidal limestone gives place to a 

 heavy bedded arenaceous limestone which weathers buff. On the 

 upper surface of this bed is a one inch conglomerate layer con- 

 taining a few fossils : 



Ophileta levata r. Ribciria nuculitiformis f. 



Dahnanella sp. r. Crinoid plates r. 



A . 7 ft. 7 in. Weathers light gray with irregular stratifica- 

 tion planes. The following fossils were found : 

 Pleurotomaria hiinterensis r. Dahnanella sp. r. 



