1873.] 



SHARP OOLITES OF NORTHAMPTONSHIRE. 



253 



Ehynchonella sub-tetraedra, Dav. 

 Terebratula perovalis, Sow. 



Natica Leckhamptonensis, Lycett. 



(like) Michelini, d'Arch. 



, sp. ? 



Nerinaaa cingenda, Bronn. 



Cotteswoldise, Lycett. 



Jonesii, Lycett. 



Trochotoma obtusa, Mot. 8f Lye. 



tabulata, Mor. 8f Lye. 



Turbo depauperatus, Lycett. 



Belemnites acutus, Miller, 



Clypeus Michelini, Wright. 



Stomechinus germinans, Phil., large 

 var. 



Calamopkyllia radiata, Lamx. 

 Latimscandra Flemingi, Edw. 



Haime. 

 Thecosmilia gregaria, M'Coy. 



Hybodus (dorsal spine). 

 Stropbodus magnus, Ag. (palates). 

 subreticulatus, Ag. (palates). 



Frond of cycadaceous plant. 



Ferns — 

 Pecopteris polypodioides, Lindley. 

 Wood. 



ft. 



4 



in. 

 



3 



4 



G 

 



Section in Lincolnshire Limestone, Tinkler's Quarry, Stamford. 



ft. in. 



1. Rubbly and broken limestone 



2. Soft concretionary marly limestone, containing 



Coral zones, with Perna, Lithodomus inclusus, 

 &c 



3. Marly limestone in thin layers, shivered 



4. Compact marly limestone, in thin and irregular 



layers [I counted seven] 3 G 



5. Very hard limestone, containing oolitic grains, 



sparsely distributed, occasionally very blue- 

 hearted 2 to 2 6 



6. Earthy shale bed, in very thin lamina, containing 



numerous Pectens and other shells, with tests 

 beautifully preserved, but crushed by compres- 

 sion 1 6 to 2 



7. " Stamford Marble " — a very hard limestone, 

 blue-hearted, and containing much Coral, Ne- 

 rinma cingenda, N. trijplicata, numerous other 

 shells, and teeth and palates oiPycnodus Buclc- 

 landi and Strcphodus magnus and S. subreticu- 

 latus — formerly much more crystalline than in 

 the present section, and then, when polished, a 

 favourite material for chimney-pieces, &c, hence 



its name — in two courses 1 to 16 



8. Very hard limestone, coarsely grained, in two 



courses 2 6 to 



9. Compact marly stone, rather hard 



10. Compact marly stone, softer, and containing 

 Nerinace — in three courses 3 to 



11. Eather oolitic limestone, a good building-stone 



Fossils from Freestone and Shelly Beds near to Tinkler's Quarry, 



3 







1 



G 



:; 



G 



1 







Area pulchra, Sow. 

 Lima proboscidea, Sow. sp. 

 Pecten lens, Sow. 

 Pholadomya fidicula, Sow. 



Serpula ? 



Stomechinus germinans, Phil. 



Strophodus magnus, Ag. (palates). 



Fossils from Tinkler's and neighbouring Quarries. 



Lima bellula, Mor. §Lyc, 



Etheridgii, Wright, 



Pontonis, Lycett. 



Avicula clathrata, Lycett. 



echinata, Sow. 



Gervillia acuta, Sow. 



