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Geological Survey Professional Paper 58
The Guadalupian Fauna |
PLATES — PLATE XXII.
DELAWARE MOUNTAIN FORMATION, GUADALUPE MOUNTAINS.
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PRODUCTUS GUADALUPENSIS n. sp. (p. 261). | |
| FIGS. 1 to 1c. |
The typical ventral valve. |
| 1. |
Anterior view. |
| 1a. |
Posterior view. |
| 1b. |
Side view in outline. |
| 1c. |
Seen from above. Delaware Mountain formation, Guadalupe Point (station 2919). |
| FIGS. 2 and 2a. |
Another ventral valve, imperfect but having the characteristic shape. |
| 2. |
Posterior view. |
| 2a. |
Side view. Delaware Mountain formation, Guadalupe Point (station 2919). |
| FIGS. 3 and 3a. |
Internal mold of a ventral valve referred to this species with some doubt. |
| 3. |
Seen from above. |
| 3a. |
Side view. Delaware Mountain formation, Guadalupe Point (station 2931). |
|
PRODUCTUS SIGNATUS n. sp. (p. 263). | |
| FIGS. 4 to 4b. |
An imperfect ventral valve preserved as an internal mold. |
| 4. |
Specimen seen from above. |
| 4a. |
Anterior view. |
| 4b. |
Side view in outline. Delaware Mountain formation, Guadalupe Point (station 2931). |
|
PRODUCTUS sp. e (p. 266). | |
| FIGS. 5 and 5a. |
External mold of a dorsal valve, all that at present is known of this form. |
| 5. |
Specimen seen from above. |
| 5a. |
Side view in outline. Delaware Mountain formation, Guadalupe Point (station 2931). |
|
RICHTHOFENIA PERMIANA Shumard (p. 283). | |
| FIGS. 6 to 6b. |
A specimen preserved as an internal mold. |
| 6. |
Anterior view, showing the impression of the "septum." |
| 6a. |
Posterior view, showing the impression of the pseudodeltidium. |
| 6b. |
Side view in outline. Delaware Mountain formation, Guadalupe Point (station 2931). |
|
FUSULINA ELONGATA Shumard (p. 62). | |
| FIG. 7. |
A section, X 10, probably situated near the center of a specimen, for at the right is what appears to be the initial cell, but strongly oblique, since the length is so short relative to the width. Labyrinthine structure like that found near the ends is, however, shown. Delaware Mountain formation, Guadalupe Point (station 2903). |
| FIG. 8. |
A transverse section through the initial cell, X 10. Delaware Mountain formation, Guadalupe Point (station 2903). |
| FIG. 9. |
A fragmentary specimen, showing the fluted walls. Side view, X 5. Delaware Mountain formation, Guadalupe Point (station 2931). |
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ACANTHOCLADIA GUADALUPENSIS n. sp. (p. 149). | |
| FIGS. 10 and 10a. |
A specimen from the Delaware Mountain sandstone apparently belonging to this species. |
| 10. |
Section about midway between the two surfaces, showing finely tubulose test, X 30. |
| 10a. |
Section parallel to and just below the celluliferous surface, showing the radiating and transverse tubules, X 30. Delaware Mountain formation, Guadalupe Point (station 2903). |
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| Plate XXII. (click on image for a PDF version) |
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Last Updated: 05-Dec-2008