172 



ME. A. EEXDLE SHORT ON RELETIC 



[May 1904, 



The next section to be opened, about a quarter of a mile or less 

 away, displayed upturned beds of Upper Carboniferous Limestone, 

 cut off flat, with the Bhgetic Beds deposited on them unconformably. 

 The limestone-beds are very massive, and dip at 35° south 80° east. 

 Between these beds little pockets of yellow clay pass down for a 

 variable distance, due to greater erosion along the planes of 

 stratification. 



On the east, the Carboniferous platform gradually slopes down at 

 an angle of about 10°, quickly becoming steeper, beneath the Rha?tic 

 Beds, and is lost to sight. The Rhaetic Series overlying this has 

 been briefly touched upon by Mr. Parsons (47), who explored it 

 with me in the first place, but since then I have found the Bone- 

 Bed and many more fossils. 



Feet inches. 



Three beds of blue lime- 

 stone. 



B 







Q 



Thick, hard, blue lime 



stone. 



Bubbly white limestone 



(incompletely exposed). 



A short distance from th 



N. Cothara Marble 



M. Laminated blue and 

 yellow clay. 



K, L. Naiadita-beds 



I. Inconstant black lime- 

 stone, weathering 

 brown. 



H, F. Blackshales, crumbly 

 above, hard and fissile 

 below ; with ferruginous 

 bands about 







Ostrea liassica, Modiola minima, 

 Pleuromya Crowcombeia, Phola- 

 clomiia glabra, etc. No ammonites. 



(Same fossils as above.) 



is, the Bhcetic Series is again exposed. 



4 to 8 Modiola minima, Monotis accussat 

 an insect-wing. 

 (Barren.) 



A very few specimens of Naiadita. 

 4 to (> Pert en valoniensis (abundant). Aximcs 

 cloacinus, Modiola minima, teeth 

 and scales of fishes. 



6 (Barren. 1 



About 3 feet down are a few nodular, red limestone-masses, con- 

 taining Aviculu contorta, Modiola minima, and Placunopsis alpina. 



A. Bone-Bed 



Feet inch' 1 ?. 

 2 



Acrodus minimus (very abundant), Ggrolepis 

 Albcrtii and Saurichthys acuminatus (abun- 

 dant), & apicalis, S. listroconus, Hybodns- 

 minor, H. cuspidatus, H. orthoconus, H. rari- 

 costatus, H. sublcpvis, Sphcsrodus minimus, 

 Squaloraia (?), Sargodon toynicus, Sphenon- 

 ckus hamatus, Termatosaurus Albert i (1 J, 

 T. crocodilinus ; various doubtful fossils 

 discussed later, coprolites, ribs, vertebrce, 

 scales, bits of bone, and Hybodus-sipmes. 



The most interesting bed in this series is the Bone-Bed. It lies 

 directly upon the flat, eroded edges of the Carboniferous-Limestone 

 strata, and is so tightly cemented to them that, on hammering, it 

 nearly always breaks up instead of separating from the limestone. 

 Its thickness is very variable, and it is over considerable areas 



