THE MOLLUSCA 



THE "GREAT OOLITE OF YORKSHIRE.' 



CLASS CEPHALOPODA. 1 



BELEMNITES GIGANTEUS, Schloth. Plate XIV, figs. 4, 4<z. 



BELEMNITES GIGANTEUS, Schloth. 1813. Min. Taschenb., vii, p. 70. 



Schloth. 1820. Petref., p. 45, No. 1. 



ELLIPTICUS, Miller. 1823. Geol. Trans., 2d Series, ii, pi. 8, figs. 1416. 

 1 Blainmlle. 1827. Mem. Belemn., p. 102. 



? GLADIUS, Blainmlle. 1827. Me"m. Belemn., p. 86, pi. 2, fig. 10. 



? COMPRESSUS, Sow. 1828. Min. Con., t. 590, fig. 4. 



AALENSIS, Volts. 1830. Mem., p. 60, pi. iv, fig. 7. 



Zieten. 1830. Pet. Wurtemb., pi. 19, fig. 1. 

 GRANDIS, Zieten. 1830. Pet. Wurtemb., pi. 20, fig. 1. 



? COMPEESSCS, Phil. 1835. Geol. of Yorksh., vol. i, pi. 9, fig. 38. 



AALENSIS, Phil. 1835. Geol. of Yorksh., vol. i, p. 124. 

 GIGANTEUS, Quenstedt. 1843. Flozg. Wiirtetnb., p. 329. 

 If Orb. Ter. Jurrass., pi. 14, fig. 15. 

 D'Orb. Prod. Paldout., p. 261. 



B, Testa elongatd, compressd, crassd, acuminatd vel subinjlatd, postice acuminatd, 

 laleraliter sulcatd, antice dilatatd ; aperturd subovali. Alveolo angulo, 20 25. (D'Orb.) 



1 The following species of Mollusca are chiefly figured from the collection of Mr. Bean, and the 

 localities are given upon the authority of that gentleman. They include all the species of univalves 

 enumerated by Professor Phillips as occurring in the " Gray Limestone or Oolite of Cloughton, Brandsby, 

 and Cave" ('Geol. of Yorkshire,' vol. i, p. 123, &c.) ; and most of the specimens illustrated in this 

 Monograph appear to have been obtained from the Yorkshire coast. We have previously assigned our 

 reason for keeping the fossils of this locality distinct from those of the West of England, and shall merely 

 introduce the following general remarks by Prof. Phillips as bearing upon the subject. " The distribution 

 of the organic remains in the 'road-stone,' or slaty rock of Brandsby, Cave Oolite, and Inferior Oolite sand, 

 has yet been carefully ascertained at only a few points ; and the following observations will probably here- 



