282 Mr. A. 8. Woodward—Paleichthyological Notes. 
lately added considerably to our knowledge of the dentition of 
a Triassic shark *; but Mr. Brodie’s discoveries in the Upper 
Keuper of Shrewley and the Lower Keuper of Coten End, 
Warwickshire, afford still further opportunity for a contribu- 
tion to Triassic ichthyology t. 
Ceratodus levissimus, Miall. (Pl. X. figs. 1, 1 a.) 
The first specimen of interest is an imperfect tooth of 
Ceratodus, shown of the natural size in Pl. X. fig. 1. The 
teeth of this dipnoan fish, as is well known, are very abundant 
in the Lettenkohle of Wtirtemberg, and it is therefore remark- 
able that only a single example has hitherto been recorded 
from the uppermost ‘T'rias of Britain. Besides the tooth from 
Ripple, Worcestershire, in the British Museum, described by 
Professor Miall under the name of C. levissimus, the present 
writer is acquainted only with Mr. Brodie’s specimen ; and, 
so far as can be determined, the two fossils are specifically 
identical. 
The new tooth, like the type specimen of C. levissimus, 
evidently pertains to the left side of the upper jaw, and is 
impertect anteriorly. It originally possessed five or six 
“horns ” or denticles, the two posterior ones being small and 
incompletely divided; and these “horns” are more satis- 
factorily preserved than in the previous specimen. As already 
remarked by Miall, the tooth is low-crowned and of the same 
type as the German C. Kaup?; but the possibility of the 
English Keuper tooth belonging to the latter species now 
seems to be disproved. As shown by Mr. Brodie’s fossil, the 
“horns”? are more acute and the ridges more compressed 
than in C. Kaupi; and the name of C. levissimus may there- 
fore be retained for the Keuper species. 
Form. and Loc. Lower Keuper, Coten End, Warwick. 
Phebodus Brodiet, sp.n. (Pl. X. figs. 2-4.) 
The survival of at least one ancient Paleozoic type of 
shark until the latter part of the Triassic period has already 
been suggested by the discovery of teeth indistinguishable 
* Smith Woodward, “On the so-called Hybodus keuperinus, Murch. 
and Strickl.,” Ann. & Mag. Nat. Hist. [6] vol. iil. pp. 297-299, pl. xiv. 
figs. 1-3 (1889). 
+ For descriptions of the section at Shrewley see Rev. P. B. Brodie, 
“On some Additional Remains of Cestraciont and other Fishes in the 
Green Gritty Marls immediately overlying the Red Marls of the Upper 
Keuper in Warwickshire,” Quart. Journ. Geol. Soe. vol. xlix. pp. 171- 
174 (1893). 
