282 Mr. A. S. Woodward — Palcpichthjolorjical N'otcft. 



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 f. 



Geratodus Icevissimus, Miall. (PI. X. figs. 1, 1 a.) 



The first specimen of interest is an imperfect tooth of 

 Ceratodus, shown of the natural size in PI. X. fig. 1. The 

 teeth of this dipnoan fish, as is well known, are very abundant 

 in the Lettenkohle of Wiirtemberg, and it is therefore remark- 

 able that only a single example has hitherto been recorded 

 from the uppermost Trias of Britain. Besides the tooth from 

 Ripple, Vv^'orcestershire, in the British Museum, described by 

 Professor Miall under the name of C. Icevissimus, 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. Icevissimus, 

 evidently pertains to the left side of the upper jaw, and is 

 imperfect 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. Kaupi ; 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. Icevissimus may there- 

 fore be retained for the Keuper species. 



Form, and Log. Lower Keuper, Coten End, Warwick. 



Phoehodus Brodiei, sp. n. (PL X. figs. 2-4.) 



The survival of at least one ancient Palaeozoic 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 Hyhodus keuper inus, Miu'ch. 

 and Strickl.," Ann. & Mag. Nat. Hist. [0] vol. iii. pp. 297-299, pi. xiv. 

 figs. 1-3 (1889). 



t 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. See. vol. xlix. pp. 171- 

 174 (1893). 



