26


Journal of Paleontology 90(1):10–30


Figure 11. Hyolith indet. and Cupitheca sp. All specimens are internal molds. All specimens coated with platinum/palladium before SEM imaging. (1, 3–5) From 776m (PO25) above base of Parahio Valley section, Parahio Formation; (6–10) from 775.41m (PO24) above base of Parahio Valley section, Parahio Formation. (1–5) Hyolith genus and species indeterminate. (1) WIMF/A/3987, close-up view displaying smooth interior surface of (3), marked by the white box; (2) WIMF/A/3988, from PV880, dorsal view; (3) WIMF/A/3987, dorsal view displaying smooth internal surface; (4) WIMF/A/3989, ventral view; (5) WIMF/A/ 3990 dorsal view; (6–10) Cupitheca sp., (6) WIMF/A/3991, lateral view displaying that the hemispherical proximal part is distinct and has a smaller diameter than the tube; (7) WIMF/A/3992, lateral view showing that the hemispherical proximal part is distinct and has a smaller diameter than the distal tube; (8) WIMF/ A/3993, apical view showing the “step” of that separates proximal and distal parts of the tube; (9) WIMF/A/3994, slightly oblique apical view showing the “step”;(10) WIMF/A/3995, oblique view of apex. Scale bars represent 50 µm(1), 200 µm(2–4, 6–10), and 500 µm(5).


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