GEOLOGICAL SURVEY, CANADA PAPER 47-24

NATHORSTITES FAUNA

‘DARK SILTSTONES’

Figures 1, 2. Sirenites meginae McLeam. Holotype, 9042. Figure 3. Same species. Plesiotype, 8811.

Figure 4. Same species. Plesiotype, 9531.

Figure 5. Silenticeras hatae McLearn. Plesiotype, 9532. Figures 6, 7, 8. Same species. Holotype, 9043.

Figure 9. Paratrachyceras sutherlandi n. sp. Holotype, 9547.

PLATE V