1920 



TYPE AMMONITES— III 



CLXXXVIII 



Fig. I 



Fig. 2 



Ammonites ERRATUS, Simpson 1843, Holotype 



P. 8 ; " South of Whitby, [Yorkshire] ; Jet Rock," tipper Lias 



Whitby Museum, go ; <p. 34-5, 45, 26, 23. See XIII 



A cripple (dysmorph) without keel ; cf. Hild. bifrons, CX1V B 



PSEUDOLIOCERAS ERRATUM, Simpson sp. 

 Whitbian, exaratnm 



