The Quarterly journal of the Geological Society of London . , del. Bentros*. CoMo, Derby. DEVELOPMENT of the SEPTUM of DACTYLIOCERAS COMMUNE, etc. Quart. Journ. Geol. Soc, Vol. LXXIII, Pu IV. , Del. DEVELOPMENT of the AMM0NITE:SEPTUM. part 1] ox THE MORPHOLOar OF THE .OrMOXITE SEPTUM. 57 Figs. 4-6. Hoplites splendens. Diameter=34 mm. Fig. 4. Septum showing displaced siphuncle, ami distortion associated 5 a. Suture of the same at 12 mm. 5 h. Do. do. at 32 mm. 6. Do. of another specimen. 7. Hoplites raidinianiis. Folkestone. Suture. 8. Hoplites auritus. Cambridge. V
The Quarterly journal of the Geological Society of London . , del. Bentros*. CoMo, Derby. DEVELOPMENT of the SEPTUM of DACTYLIOCERAS COMMUNE, etc. Quart. Journ. Geol. Soc, Vol. LXXIII, Pu IV. , Del. DEVELOPMENT of the AMM0NITE:SEPTUM. part 1] ox THE MORPHOLOar OF THE .OrMOXITE SEPTUM. 57 Figs. 4-6. Hoplites splendens. Diameter=34 mm. Fig. 4. Septum showing displaced siphuncle, ami distortion associated 5 a. Suture of the same at 12 mm. 5 h. Do. do. at 32 mm. 6. Do. of another specimen. 7. Hoplites raidinianiis. Folkestone. Suture. 8. Hoplites auritus. Cambridge. View of venter showing displacement of the siphuncle, first to one side and then to the other. 9. Psiloceras planorhis. Robin Hoods Bay. Shomng position of dis- placed 10-15. Asymmetrical sutures of various 10. Cosmoceras jason. Buckinghamshire. 11. ^ Normannites hrailcenridgii. Mesvil. 12. Aspidoceras perarmatiim. Faringdon. 13. TJptonia jamesonl. 14. Keplerites calloviensis. Ashton Dactijlioceras commvne. Whitby. IL=Internal lobe. ES = External saddle. L^ = Principal or first lateral = Auxiliary lobe. S^ = First lateral saddle. M = Median plane
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
