BRITISH AVONIAN CONODONT FAUNAS 93 
Genus GNATHODUS Pander 1856 
1856 Gnathodus Pander : 33. 
TYPE SPECIES. Gnathodus mosquensis Pander 1856. 
Gnathodus antetexanus Rexroad & Scott 
Plate 18, figs. 6a—c, 8a, b, 13a-d 
1947 Gnathodus texanus Roundy ; Mehl & Thomas: to, PI. 1, fig. 3. 
1957 Gnathodus texanus Roundy ; Bischoff (partim) : 25, Pl. 3, fig. 22 only. 
1959 Gnathodus texanus Roundy ; Voges (partim) : 284, Pl. 33, figs. 40, 42 only. 
1962 Gnathodus n. sp. aff. Gnathodus texanus Roundy; Collinson, Scott & Rexroad : chart 3. 
1964 Gnathodus antetexanus Rexroad & Scott : 28, Pl. 2, figs. 7-10. 
MATERIAL. I0 specimens : figured, X 412, X 413, X 414. 
Rance. North Crop ZLA 32-ZLA 33, Avon Gorge Z 33-C 9. 
Description. Most of our specimens are broken, but the platforms are preserved. 
They show the typical narrow outer platform, with a sparse covering of nodes, and 
the broader inner platform with the large upstanding node, which are characteristic 
Posterior Posterior 
Inner side of 
) Se platform 
Outer side of —_ 
platform 
Node eae ——_-—— Basal cavity 
—— Keel 
Anterior Anterior 
A. Oral view B. Aboral view 
Denticles of blade 
Nodes of platform ————. 
Platform 
C. Lateral! view 
Fic. 22. Gnathodus sp. showing morphological terms used in the text. 
