7926 



TYPE AMMONITES— VI 



DCXL 



Caloceras aplanatum, Hyatt, 1889, Holotype 



Gen. Ariet. p. 147, f. 23, 24 ; Whitby, Yorks ; Jamesoni Bed 



Metechioceras, Trueman & Williams, 1925 ; Mus. Cambridge, Mass. 



S. (cast) 60, 21, 18, 58 ; 76, 21-5, 17, 62 ; size c. 80, max. ? 



Cast and photograph sent by Prof. S. Henshaw 



METECHIOCERAS APLANATUM, Hyatt sp. 

 Deroceratan, Metechioceras. Cf. CDLXXXII 



