USGS: Geological Survey Professional Paper 58: The Guadalupian Fauna (Plates)

Geological Survey Professional Paper 58

The Guadalupian Fauna

PLATES — PLATE XXX.

DELAWARE MOUNTAIN FORMATION, GLASS MOUNTAINS.

	ENTELETES GLOBOSUS n. sp. (p. 294).
FIGS. 1 and 1a.	A crushed specimen retaining both valves, which clearly show its dorsisinuate character.
1.	Dorsal view.
1a.	Side view. Delaware Mountain formation, Glass Mountains (station 3763).
	ENTELETES sp. a (p. 296).
FIGS. 2 and 2a.	A fragmentary ventral valve.
2.	Seen from above.
2a.	Side view in outline. Delaware Mountain formation, Glass Mountains (station 3763).
	STREPTORHYNCHUS PYGMAEUM n. sp. (p. 178).
FIGS. 3 to 3c.	A large dorsal valve of moderate convexity.
3.	Interior view, X 4. Here are to be seen the powerful cardinal process, median septum, and crenulated margins, all of which seem to indicate shell thickening and advanced age.
3a.	View of the exterior, X 4.
3b.	Posterior view in outline, showing the cardinal process, X 4.
3c.	Side view in outline, X 4. Delaware Mountain formation, Glass Mountains (station 3763).
FIGS. 4 to 4b.	A small dorsal valve of moderate convexity.
4.	Interior view, X 4.
4a.	Exterior view, X 4.
4b.	Side view in outline, X 4. Delaware Mountain formation, Glass Mountains (station 3763).
FIGS. 5 to 5b.	A small dorsal valve of irregular growth and great convexity.
5.	View of the interior, X 4.
5a.	View of the exterior, X 4.
Sb.	Side view in outline, X4. Delaware Mountain formation, Glass Mountains (station 3763).
FIGS. 6 to 6b.	A ventral valve which very plainly shows a large scar of attachment.
6.	Seen from above, X 4.
6a.	Posterior view, X 4.
6b.	Side view in outline, X 4. Delaware Mountain formation, Glass Mountains (station 3763). See also fig. 11.
	STREPTORHYNCHUS? sp. a (p. 180).
FIG. 7.	A small dorsal valve of undetermined species. View of exterior, X 4. Delaware Mountain formation, Glass Mountains (station 3763).
	MEEKELLA SKENOIDES H. Sp. (p. 206).
FIGS. 8 to 8c.	The type specimen, which is smaller than some fragments associated with it and probably belonging to the same species.
8.	Side view, X 2.
8a.	Dorsal view, X 2. Tile plications are hardly represented as sufficiently angular.
8b.	Posterior view, X 2.
8c.	Anterior view, X 2. Delaware Mountain formation, Glass Mountains (station 3763).
FIG. 9.	A small dorsal valve from the same station as the foregoing, which shows the surface characters more perfectly. View of the exterior, X 2. Delaware Mountain formation, Glass Mountains (station 3763).
	MEEKELLA DIFFICILIS n. sp. (p. 207).
FIGS. 10 to 10g.	The type specimen preserved in a silicified condition
10.	Interior of the ventral valve, showing the two dental plates and what look like two additional plates almost parallel to the area.
10a.	Front view of both valves.
10b.	Ventral valve, seen from above.
10c.	Side view of both valves.
10d.	Cardinal process supposed to belong to this specimen, seen from the lower or internal side, X 3.
10e.	Same, seen from the upper or external side, X 3.
10f.	Terminal view, X 3.
10g.	Side view, X 3. Delaware Mountain formation, Glass Mountains (station 3763).
	PRODUCTUS SUBHORRIDUS var. RUGATULUS n. var. (p. 267).
FIGS. 11 to 11d.	A specimen retaining both valves in conjunction.
11.	Dorsal view, showing an attached ventral valve of Streptorhynchus pygmaeum.
11a.	Ventral view.
11b.	Side view.
11c.	Posterior view.
11d.	Anterior view. Delaware Mountain formation, Glass Mountains (station 3763).
FIGS. 12 to 12c.	A ventral valve freed by etching.
12.	View of the interior.
12a.	View of the exterior.
12b.	Side view.
12c.	Posterior view. Delaware Mountain formation, Glass Mountains (station 3763).
	PRODUCTUS MEEKANUS n. sp. (p. 263).
FIGS. 13 and 13a.	A fragmentary but otherwise well-preserved ventral valve.
13.	Seen from above.
13a.	Side view in outline. Delaware Mountain formation, Glass Mountains (station 3763).
	STROPHALOSIA HYSTRICULA n. sp. (p. 275).
FIGS. 14 and 14a.	The only specimen found, a ventral valve,
14.	Seen from above.
14a.	A Anterior view. Delaware Mountain formation, Glass Mountains (station 3763).
	SPIRIFERINA HILLI n. sp. (p. 379).
FIGS. 15 to 15b.	A ventral valve.
15.	View of the exterior.
15a.	Side view in outline.
15b.	View of the interior. Delaware Mountain formation, Glass Mountains (station 3763).
	HUSTEDIA MEEKANA Shumard (p. 394).
FIG. 16.	A small, somewhat crushed specimen. Dorsal view. Delaware Mountain formation, Glass Mountains (station 3763).
FIG. 17.	A large silicified specimen. Dorsal view. Delaware Mountain formation, Glass Mountains (station 3763).
	HUSTEDIA PAPILLATA Shumard (p. 397).
FIGS. 18 to 18b.	A rather small specimen referred to this species.
18.	Dorsal view.
18a.	Ventral view.
18b.	Side view in outline. Delaware Mountain formation, Glass Mountains (station 3763).
	HUSTEDIA BIPARTITA n. sp. (p. 398).
FIGS. 19 to 19c.	The typical specimen.
19.	Dorsal view, X 2.
19a.	Side view, X 2.
19b.	Ventral view, X 2.
19c.	Anterior view, X 2. Delaware Mountain formation, Glass Mountains (station 3763).
FIGS. 20 and 20a.	A dorsal valve similar to the last.
20.	Seen from above, X 2.
20a.	Same, natural Size. Delaware Mountain formation, Glass Mountains (station 3763).

Plate XXX. (click on image for a PDF version)

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Last Updated: 05-Dec-2008