1923 



TYPE AM MOM TES~-! I 



CCCXCI A 



Fig I a 



Fig. I 



Ammonites cornucopia, Young *N: Bird, 1822, " Tvpe " 



Geol. Yorks., 252, 327 ; xii, 6 ; Whitby, Yorkshire ; Alum Shale 



[Peak Shales" ; Whitby Mus. No. 82 ; S. 47, 40, 54, ^2 



S. 128, 39, 48, 33-5; 304. 35. 35- 39; max. c. 310, —►- Orbiculoidea 



" Aperture nearly circular," p. 252. Y. & B.'s tig. a synthetograph ? 



THYSAXOCERAS CORNUCOPIA, Young cS: Bird sp. 

 Haugian, variabilis ; Holotype ? Lectotype. Cf. CXXX 



