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SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOL. 57
| DESCRIPTION OF PLATE 10 | ||||
| cr. Central ring. rc. Radial canals. s. Stomach. | ||||
| PAGE | ||||
| Eldonia ludwigi Walcott (see also text fig. 5 and pls. 8-9 and 11-12) | 46 | |||
| Fig. | 1. | A large individual very much compressed and distorted. The central ring (cr), radial canals (rc), and stomach (s) are indicated. A second specimen that lies under the large specimen is shown on the left by the convoluted stomach. Natural size. U. S. National Museum, Catalogue No. 57546. | ||
| 2. | A specimen showing the outlines of the stomach (s) and the large central canal. ✕ 2. U. S. National Museum, Catalogue No. 57547. | |||
| 3. | Two specimens of the stomach with traces of the umbrella. The strong annulation of the stomach is shown by the specimen on the lower right side. ✕ 2. U. S. National Museum, Catalogue No. 57548. | |||
All of the specimens illustrated on this plate are from locality (35k) Middle Cambrian; dark siliceous shales in the Burgess shale of the Stephen formation on the west slope of the ridge between Mount Field and Wapta Peak, one mile (1.6 km.) northeast of Burgess Pass, above Field, British Columbia.
