ON T]IE FOSSILIFEUOL'S TKAN&ITION BED IN NOirniAJirTONtlllRE. 33!) 



Ft. in. 

 D. — 5. Dull grey clay or shale, bhie towards bottom. 



Bottom not reached 3 0? 



The continuation of this section is shown in a shallow opening some 

 half-mile away, and is almost exactly like that at the bottom of the fii-st 

 section described (Mi'. Ward's farm), except that the Transition bed is 

 softer and more distinctly shown, and the Fish bed is more nodular, and 

 apparently more fossiliferous. It does not appear necessary to give a 

 separate section and list of fossils. 



The next section opened was near to Arbury Hill, about 13 miles 

 almost due east from Northampton. In this neighbourhood the rock bed 

 is very near to the surface. 



Sectio-v xear to Arbury Hill. 



Ft. in. 

 1. Soil lto2 



E to J ?— 2. Fish Bed. — A yellowish, sometimes almost white 

 limestone, very irregular in composition, not in 

 the least like the Fish bed in the other sections 

 described. C'rowded with Ammonites . . , .3 

 Fish frar/ments (« few'). 

 Evomphaliis mi nut tin. 



Cevitliiuin xiiMiassiimm ( = ]Veriiirra liassica^. 

 Ccritliiiiiii (jradatum ? 



A lit nioi) itct: ouriiiwojna. A iinnonitcs s-imilis. 



„ scrjjcntinun .^ „ ccecilia. 



„ falcifer. „ i'xaratit&. 



„ Stranffivat/si. „ crasnus. 



„ latescens. „ n. y;., ,^-c. 



L.— 3. Teaksition Bed.— a light grey marl, rather hard, 



hence difficult to extract fossils from whole . . 3 

 Ananonitca aciitiis .Hiiinites velatus. 



„ craxsiix Plicatula spinosa. 



„ Holaiidni Pceten textorius. 



Tiirho linctus llhy iiclwnella tetrahedra, ^-c. 



Phasianella furhiiinta 

 AcUeoninia Tlminstcrcmtis 

 Amherlija .^iJolus 



M.— 4. Eock bed 4 7 



Fortunately a similar section was opened at Catesby about the same 

 time, and worked for about a week for road metal. This gave us an 

 opportunity of examining the rock led of that district. The section 

 itself above the rock bed is so similar to the one at Arbury Hill that 

 it would be mere i-epetition to give it. 



The rock bed is here calcareous, ferruginous, and very fissile. The 

 fossils obtained or noted were — 



Pecten equiralrls {Jiarcjc fwni). 



,, dcntatus. 



„ limularis. 

 Lima »p.? (very large form). 

 Trigonia Lingoncnsis! 

 Rhynckimella tetrahedra (in masses), 

 Terchratiihi jnmctata. 

 Waldhciinia resujiitiato, i^x. 



2 2 



