LIOCERAS OPAL1NUM. 



45 



VI. — Section exhibited at Coaley Wood {twelve miles from Gloucester 



by west). 



south 



Ft. In. 



Opali 



num 

 zone. 



Striatu- 

 lum 

 subzone. 



1. Large freestone quarry, above which are seen beds with Terebratula 

 globata ...... about 



D' 2. Portion unseen. 



3. Pale yellow stone with light coloured oolitic grains . . about 



C" 4. Very hard, pale coloured, compact rock, with very small brown grains. 

 Gives a metallic ring when struck. Lioc. opalinum fairly abundant 

 hardly any other fossils .... 



5. 1 Hardish oolitic rock, somewhat irregular, not so compact, yellow coloured 

 with more brown grains. Lioc. opalinum, small Chemnitzia, Belem 

 nites, &c. ....... 



C" 6. Eubbly oolitic irregular stone like 5, hardly separated from it, but softer 

 and mixed with marl. Am. torulosus? quantity of Belemnites and 

 Astarte, also Opis, Cypricardia, and many other Lamellibranchiata. 

 Lytoceras Wrighti, S. Buckm., occurs in this bed and the bottom of No. 5 



7. Hard, compact, whitish-yellow stone, with darker grains. Gramm. falla- 

 ciosum ?, 2 Bayle ; Oxynoticeras ? discoides, Zieten ; Hammatoceras 

 insigne ? Schubler ...... 



8. A seam of brown rubbly marl, with numerous dark brown oolite grains ; 

 looks like crushed linseed. Gramm. striatulum, Sow. ; Gramm. radians, 

 Wright (pi. lxiv, fig. 1) 



B'' 9. Very hard, bluish-grey, sandy nodules, embedded in a marly paste like 

 No. 8, of which it is really a part. Gramm. striatulum occurs some- 

 times in the paste on the nodules, but never in them to my knowledge . 



10. Hard, blue-centred stone . . . . 



11. Fine, yellow, micaceous sands . . . about 



12. Brownish concretionary rock, very slightly micaceous, containing dark 



oolitic grains and pieces of broken shells, has a similar appearance to 

 bed 7, but harder. Some Ammonites, but scarce 



13. Two bands of hard yellowish-blue stone, somewhat sandy. Large Lima) 



Ammonites, &c. ...... 



14. Yellow sands, becoming blue in the lower part 



15. Dark, yellowish-brown, concretionary marl with Ammonites 



16. Band of yellowish-blue, hard sandy stone. Ammonites fairly abuudant 



especially on the top; Haugia 3 variabilis, d'Orb., and similar forms 

 Lytoceras sublineatum, Oppel ; Stephanoceras, sp. ? 

 Fine yellow sands ..... about 25 



Zone ? B' 17. Band of yellowish-blue hard sandstone, with Rildoceras bifrons* Brug. 



abundant; Harp.? compactile, Simpson . . . .10 



1 Beds 5 — 8, Cephalopoda-bed of various authors. 



2 The identification of some of these Ammonites not yet freed from matrix must be considered 

 provisional for the present. They will be alluded to later on in their right order. 



3 Hauuia, nov. gen., in compliment to Dr. E. Haug, of Strasburg ; type Am. variabilis, d'Orbigny, 

 Ceph., pi. 113, figs. 1, 2. 



4 This is a much compressed involute variety, and very different to what I have from the Upper 

 Lias Clay of Somerset. 



Cottes- "") 

 wold 



Sands. [ 



Varia- 

 bilis 

 subzone 



50 



5 6 



1 4 



6 



8 



7 



2-3 



6 



50 



2 9 



