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A x e l Heiberg Island, Strand Fiord. G S C loc. 5 1 6 2 8 . Figure 2. Arctocephalites callomoni n. sp. ( P a g e 4 ) . Venter and cross-section. Paratype, G S C N o . 17645. S a m e locality as fig. 1. See lateral v i e w o n PI. IV, fig. 1. Figure 3. Arctocephalites cf. A. arcticus cross-section. G S C N o . 1 7 6 4 1 . v i e w o n PI. I, fig. 4. ( N e w t o n ) ( P a g e 5 ) . V e n t e r and S a m e locality as fig. 1. See lateral PLATE IV ( A l l figures natural s i z e ) T y p e s in c o l l e c t i o n s o f the G e o l o g i c a l Survey o f C a n a d a Arctocephalites callomoni n.

P a g e 6 ) . 2a, lateral view; 2b, venter and cross-section. Paratype, G S C N o . 1 7 6 5 5 . S a m e locality as fig. 1. Figures 3a, b. Cadoceras septentrionale n. sp. ( P a g e 6 ) . 3a, lateral v i e w ; 3b, venter and cross-section. Paratype, G S C N o . 17657. S a m e locality as fig. 1. PLATE VII ( A l l figures natural s i z e ) T y p e s in collections of the G e o l o g i c a l Survey of Canada Figure 1. Cadoceras septentrionale var. latidorsata n. sp. n. var. ( P a g e 8 ) . Lateral view, anterior part of last whorl not illustrated.

Aklavik Range (Northeastern Richardson Mountains) The collection from the Aklavik Range was made by Jeletzky and contains two species, Cadoceras septentrionale var. latidorsata n. sp. et n. , and Cadoceras (Stenocadoceras) canadense n. sp. The former was also found in the upper Cadoceras bed on Axel Heiberg Island, and a specimen tentatively assigned to C. canadense came from Babbage River, British Mountains, where it is associated with C. arcticum n. sp. The latter species was also found on Cornwall Island.

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