212 A. R. Horivood — Upiwr Trias of Leicester sJ tire. 



a tooth of Hyhodus minor, and SpJmionchus as belonging to the sanK;. 

 He suggested Sargodon tomicus resembled shed tubercles of fin spines 

 of Nemacanthus monilifer { — Hyhodus minor). 



The next description of this section was by M. Browne (1901). 

 He remarks that the Lower E-haetic upper limit is generally taken 

 as the second limestone (from below), but he prefers to take the first 

 one or just above it as the junction with the Upper llhgetics. He 

 suggests that at 2 ft. 8 in. a rust-coloured band may represent a second 

 bone-bed, as at Aust. Above this the beds are more fissile, crowded 

 with Isodonta. The first limestone band, he says, is 90 per cent 

 carbonate of lime, but this is an over-estimate, as it is largely detrital 

 in origin. The Upper Rhsetics contain only Annelid burrows above 

 the second limestone, which is said to contain Estheria minufa. 

 A curious statement is made to the elfect that a persistent bund of 

 limestone nodules above the second thick nodular bed " ends tlie true 

 Rhsetic". The occurrence of radiating gypsum is noted for the first 

 time. The yellowish limestone is said to be Lower Lias above, 

 " Sub-Lias = White Lias" below. Colobodus, described at the Brit. 

 Assoc, 1891, is recorded from the bone-bed. He remarks that both 

 Tea-green and Eed Marl might reveal traces of fish-scales, and teeth 

 of sharks in the sandstone and skerries. He notes that the Tea-green 

 Marls are 20 feet, not 15 ft. 5 in. as given by Quilter. He correlates 

 the Sub-Lias with the Ostrea zone, and this obviously with the 

 White Lias. He says the compound rock was 3 feet in the north-east 

 part of the pit, and at the top contained Liassic fossils. He also says 

 the limestone resembles Gotham Marble and White Hurs of Barrow-on- 

 Soar, and that nodules in the lower part may be the White Hurs = in 

 part the "Gotham Marble" ; and probably that the Fourfoot Lower 

 Lias Limestone " is represented at the top of the thick stone". To 

 the south the Ironstone of Barrow-on-Soar is interstratified with this 

 "compound rock", which occurs at the base of the Fourfoot Lime- 

 stone. He notes that the Fourfoot or good-for-nothing Limestone 

 occurs in the pit to the south-west curiously pitted with raindrops or 

 Lithodomi, and contains Fs. planorhe. Unlike Wilson and Quilter, 

 he does not confound the Upper llhsetics and White Lias, but regards 

 beds above his Upper Ehaetics as " Sub-Lias". L. Richardson later 

 redescribed this section, with critical notes on the above correlations. 

 At the time, I must say, I agreed with the main portions of his 

 description and measurements, but having had occasion to remeasuie 

 the section, I find that my own are slightly different. Richai'dson 

 draws the line between the Upper and Lower Rhsetics at 10 ft. 7 in. 

 from the top of the former, relying on the unfossiliferous nature of 

 the Upper and the yellow colour of the shales as distinctive features 

 for separating them from the Lower. The bottom part of the 

 compound bed forms the top of the llhaetics, and the Upper the base 

 of the Lower Lias if not divided by marls. He considers there is 

 a non-sequence between them, as between the Tea-green Marls and 

 the bone-bed, since elsewhere Sully Beds intervene, though here the 

 two are conformable. He estimates the Tea-green Marls at 12-15 feet, 

 !)ut I find the estimate of 20 feet given by Browne more correct. He 

 says "now it is at, or may be a few inches below, this limestone bed 



