PLATE 7 
Fics. 1 a-d. Acanthorhynchia (Echinirhynchia) senticosa (Schlotheim). Neotype. 
“Weissem Jura’’. Amberg, Germany. Figured by Rothpletz (1886). Collection of the 
Bayerische Staatsammlung fiir Palaontologie und historische Geologie, Miinich. AS vii 330. 
Fics. 2 a-d, 3 a-d. A. (Echinirhynchia) senticosa (Schlotheim). ‘“‘Malm delta’. 
Heiligenstadt near Erlangen, Germany. Collection of the Geologisches Institut der Universitat, 
Erlangen. 
Fics. 4 a-d, 5,6. Acanthorhynchia (Echinirhynchia) fileyensis (Buckman & Walker). 
Oxfordian, (Lower Calcareous Grit). Filey, Yorkshire, England. B.M. B. 31867, B. 31334, B. 
31333. 
Fics. 7 a-d. Acanthorhynchia (Echinirhynchia) lorioli (Rollier). Oxfordian, (Terrain 
a Chailles). Fringeli, ““ Berner Jura’’. Collection of the Naturhistorisches Museum, Basel. 
L 1700. 
Fics. 8a-d,9. A. (Echinirhynchia) lorioli (Rollier). Oxfordian, transveyavium zone. St. 
Sorlin, Liefnans (Jura), France. B.M. BB. 44166-—67. 
Fics. 10 a-b, 11 a-d. Acanthorhynchia sp. Upper Kimmeridgian, (Oignon Limestone). 
Colomieu (Ain), France. B.M. BB. 44169, 44168. 
Fics. 12 a-d, 13, 14, 15, 16. Somalirhynchia sutherlandi (Davidson). Topotypes. 
Kimmeridgian, ?pseudomutabilis zone (Boulder Beds). West Garty, Sutherland, Scotland. 
Collection of the Geological Survey of Great Britain (Edinburgh Office). Fig. 12 no. G.S.E. 3684, 
West Garty; fig. 13 no. M 2268g, West Garty ; fig. 14 no. G.S.E. 3681, West Garty ; fig. 15 no. 
G.S.E. 3685, West Garty ; fig. 16 no. G.S.E. 3686, Portgower. 
