260 
AOTINOPTERYGII. 
from a single locality (Maastricht). The teeth of the two inner¬ 
most flanking series are frequently crowded and almost triangular 
in form, and more nearly equal in size than shown in the figure 
quoted. 
Form. § Loc. Upper Cretaceous (Danian and Senonian): Holland, 
Belgium, and Trance 1 . 
42991-93. Portion of right splenial dentition and fragments; Danian, 
Maastricht, Holland. Van Brecla Coll. 
28717, 30752. Detached teeth, probably of this species; Upper 
Senonian, Ciply, near Mons, Belgium. Purchased , 1853. 
Anomoeodus distans (Coquand). 
1860. Pycnodus distans, H. Coquand, Descript. Gdol. etc., Depart. 
Charente, vol. ii. p. 97. 
1880. Pycnodus distans = Pycnodus ci'etaceus, H. E. Sauvage, Bull. Soc. 
Geol. France, [3] Vol. viii. p. 460, pi. xiv. fig. 4. 
Type. Imperfect splenial dentition. 
A species of moderate size, known only by part of the splenial 
dentition. Teeth of the principal series on the splenial bone much 
arcuated and tapering in the inner half, about three times as broad 
as long; teeth of the innermost row of the flanking series round 
and deeply pitted, smaller than those of the next adjoining row, 
which are almost or quite smooth. 
Form. Sf Loc. Senonian : Charente, France. 
Not represented in the Collection. 
Anomoeodus angustus (Agassiz). 
1837-44. Gyrodus angustus, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 
pp. 235, 246, pi. lxvi. a. figs. 14, 15. 
(P) 1839-44. Pycnodus cretaceus , L. Agassiz, ibid. p. 198, pi. lxxii. a. 
fig. 60. [Splenial teeth ; Manchester Museum.] 
1833-44. Pycnodus angustus , L. Agassiz, ibid. pt. i. p. 17, pt. ii. p. 199 
(name only). 
1844. Pycnodus elongatus, L. Agassiz, ibid. p. 199. 
1845. Gyrodus angustus , A. E. Beuss, Verstein. bolim. Kreideform. pt. i. 
p. 9, pi. iv. fig. 55. 
1845. Pycnodus rhomboidalis, A. E. Reuss, ibid. pt. i. p. 10, pi. iv. 
figs. 46-54. [Detached teeth.] 
1 Fragments of dentition from the Upper Senonian and Danian of Scandi¬ 
navia are also ascribed to this species by J. W. Davis, Trans. Roy. Dublin Soc. 
[2] vol. iv. (1890), p. 416, pi. xlii. figs. 16-18. 
