124 BRITISH AVONIAN CONODONT FAUNAS 
1961 Hindeodella germana Holmes ; Higgins (partim) : Pl. 1o, fig. 12, (non Pl. 10, fig. 13=H. 
secavata Collinson & Druce). 
Hindeodella montanaensis (Scott) ; Collinson & Druce in press. 
MATERIAL. 80 specimens: figured, X 175, X 176. 
RANGE, North Crop 3D 10-3D Io. 
DeEscRIPTION. Members of this species are slightly constructed hindeodellids, 
having a massive main denticle with a very wide base, strongly convex lateral faces, 
and being inclined posteriorly at an angle of about 45°. The denticles on the 
posterior bar are minute in comparison with this denticle. They are crowded and 
laterally compressed, with sharp anterior and posterior edges, having a hindeodellid 
pattern with 2 or 3 smaller denticles between the larger ones. The lateral faces of 
the posterior bar are gently to strongly convex. The anterior lateral process is deep 
with three confluent denticles near its proximal end, but the distal end, which points 
strongly upward and inward, consists of a single fang-like denticle, about half the 
width of the main denticle. The basal anterior and posterior edges of the main 
denticle are also minutely denticulate. The outer lateral surface of the main denticle 
is flat. The aboral surface of the whole unit is excavated by a shallow groove which 
flares below the main denticle. The posterior bar is straight and about 5 to 6 times 
the length of the anterior bar in the present specimens, but these are broken. One 
specimen, which is also broken, shows a tendency for the denticles near the posterior 
end of the bar to be relatively larger, about twice as large as most of the denticles of 
the posterior bar, although the aboral cavity is little expanded below the main 
denticle. 
Hindeodella secarata Collinson & Druce 
Plate 29, figs. II, 13-15 
1957 Hindeodella germana Holmes ; Bischoff (partim) : 27, Pl. 6, fig. 34 (non PI. 6, fig. 32=H. 
montanaensts). 
1961 Hindeodella geymana Holmes ; Higgins (partim) : Pl. ro, fig. 13 (non Pl. to, fig. 12=H. 
montanaensis). 
1963 Hindeodella germana Bischoff ; Bouckaert & Higgins ; 17, fig. 3. 
Hindeodella secavata Collinson & Druce in press. 
MATERIAL. 46 specimens : figured, X 184, X 181, X 182, X 183. 
RANGE. North Crop 3D 8-3D 1g. 
DESCRIPTION. The present specimens agree closely with the description given by 
Collinson and Druce. The posterior bar is greatly elongated and tends to taper 
towards the posterior end. It is straight to arched, with fine acicular denticles, and 
it lacks a well-developed anterior fang. The anterior process is very small, and is 
relatively feebly inflexed. The basal groove is conspicuous, but there is no obvious 
basal cavity at the anterior end. 
