no. 3
burgess shale fossils—walcott
41
Plate 11
PAGE | |||
Aysheaia pedunculata Walcott | 8 | ||
Fig. | 1. | (✕ 2.) An unusually perfect specimen. | |
2. | Large coiled specimen that Doctor Walcott regarded as possibly representing a different animal, but which may appear odd only because of its unusual attitude. |
Plate 12
PAGE | |||
Leanchoilia superlata Walcott | 8 | ||
Fig. | 1. | (✕ 2.) Retouched figure of a fragmentary specimen. | |
2. | Natural size unretouched photograph of a well preserved individual. | ||
3. | Enlarged, retouched figure of the counterpart of the preceding figure. |
Plate 13
PAGE | |||
Leanchoilia superlata Walcott | 8 | ||
Fig. | 1. | (✕ 3?). An appendage apparently belonging to this species. | |
2. | An individual flattened out in the horizontal plane, thus giving it an unusual aspect. | ||
Leanchoilia major, new species | 10 | ||
Fig. | 3. | Illustration of the holotype. | |
Naraoia compacta Walcott | 10 | ||
Fig. | 4. | (✕ 3.) An unretouched photograph of a good specimen. The appendages are only faintly shown extending beyond the carapace at the rear of the specimen. (See pl. 15, fig. 3.) |
Plate 14
PAGE | |||
Naraoia compacta Walcott | 10 | ||
Fig. | 1. | (✕ 2.) Dorsal view of a compressed and somewhat distorted specimen, on which the outline of the body trunk is well shown and, on the left side, the ends of 16 exopodites preserving their fine filaments. | |
2. | (✕ 2.) Dorsal view of a specimen with the carapace shortened nearly one-half by compression. The central portion showing the hepatic glands or caeca is unusually well preserved. The posterior dorsal shield has the outlines of the fused segments and the outer border clearly indicated, and on the left side, where a piece is broken out, two of the exopodites are seen, and at the posterior margin, traces of endopodites. | ||
3. | (✕ 3.) Enlarged view of a specimen with peculiar features along the axis. | ||
Leanchoilia superlata Walcott | 8 | ||
Fig. | 4. | (✕ 2.) Details of a separate appendage. | |
5. | (✕ 2.) Another appendage of a different type. |