86 
Tsephodns (Lophodud) sinuosiis, Davis. 
Yoredale Rock. Leyburn. 
J. W. Davis. Trans : Roy : Dublin Soc : (2), Vol : I., pi: 
li., fig; 28, p : 409 (tooth). 
Ptychodns mammillaris, Ag : 
Chalk. Near Rochester. 
A. S. Woodward. Ann: Rep. Yorks: Phil: Soc: pi: i., 
figs: 3—14, p : 39. (12 specimens of teeth). 
Ptychodus polygynis, Ag : 
Chalk. Between Folkestone and Dover. 
A. S. Woodward. Ann : Rep : Yorks : Phil: Soc : 1889, 
pi: i., figs : 15—20, p. 40 (6 teeth). 
Pygopteriis mandihularis, Ag : 
Marl^Slate. Thrislington Grap. 
King. Permian Foss : (Pal: Soc :), pi: xxiii., p. 232. 
Sfwdalodus minor, Davis. 
Yoredale Rocks. Leyburn. 
J. W. Davis. Quart: Journ : Greol: Soc: Yol: XL. (1884), 
pi: xxvi., fig: 7, p. 626 (tooth). 
Squalus sp : (?) 
Oxford Clay. Near Scarborough. 
Phillips. Greol: Yorks : Pt : I., pi : v., fig: 22 (tooth— 
probably of Aspidorhynchus eaodus, Egerton). 
Strophodus Rigcnixi, Sow: 
Cornbrash. Scarborough. 
H. M. Platnauer. Ann: Report Yorks: Phil: Soc : 1886, 
PI: I., figs: 1, 2, p. 36. 
Venmtodus (LogAiodm) serrafu^, Davis. 
Yoredale Rocks. Leyburn. 
J. W Davis. Trans: Roy : Dublin Soc : (2) Yol: I., pi: li., 
figs : 23, 24, p. 408. 
Quart: Journ : (Jeol: Soc : Yol: xl. (1884), pi: xxvii., fig : 19, 
p. 627 (teeth, two specimens). 
Xystrodus pulchellm, Davis. 
Carb : Limestone. Richmond. 
J. W. Davis. Trans: Roy: Dublin Soc: (2) Yol; I., 
pi: Iv., fig: 24, p. 450 (tooth). 
