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

Geological Survey Professional Paper 58

The Guadalupian Fauna

PLATES — PLATE XVII.

"DARK LIMESTONE," GUADALUPE MOUNTAINS.

	FUSULINA ELONGATA Shumard (p. 62).
FIG. 1.	A specimen broken at one end. Side view, X 3, showing the bluntly rounded shape of the ends. "Dark limestone," Pine Spring (station 2930).
FIG. 2.	A specimen incomplete at both ends. Side view, X 3, showing the closely arranged and somewhat irregular sutures. "Dark limestone," Pine Spring (station 2930).
FIG. 3.	A somewhat large, complete, symmetrical specimen. Side view, natural size. "Dark limestone," Pine Spring (station 2930).
FIG. 4.	A smaller, much distorted specimen, also practically complete. Side view, natural size. "Dark limestone," Pine Spring (station 2930).
FIG. 5.	A large, somewhat contorted specimen. This and some of the preceding specimens illustrate the tendency of these forms to exfoliate concentrically and to break up into segments. The latter is not necessarily connected with fracture of the rocks, for many specimens are broken in situ. Side view, natural size. "Dark limestone," Pine Spring (station 2930).
FIG. 6.	Transverse section, X 20. This section does not pass through the initial cell. It seems to indicate that the specimens were eroded or exfoliated before fossilization. The wall structure and method of formation of the shell are unusually well shown. "Dark limestone," Pine Spring (station 2930).
FIG. 7.	Longitudinal section, X 20. The section does not pass through the initial cell and is of course incomplete at both ends. The highly contorted character of the partition walls is shown. "Dark limestone," Pine Spring (station 2930).
FIG. 8.	Transverse section through the initial cell, X 10. "Dark limestone," Pine Spring (station 2930).
	SPIRILLINA aff. S. PLANA Möller (p. 69).
FIG. 9.	Section through or parallel to the axis, X 20. "Dark limestone," Pine Spring (station 2930).
	ENDOTHYRA sp. b (p. 67).
FIG. 10.	Section somewhat oblique to the axis, X 10. "Dark limestone," Pine Spring (station 2930).
	ENDOTHYRA sp. a (p. 67).
FIG. 11.	Section oblique to the axis, showing the perforated partition which closes the aperture, X 10. "Dark limestone," Pine Spring (station 2930).
	SPONGE, undetermined.
FIG 12.	A body having fairly distinct outlines in thin section and apparently a spicular constitution to a considerable extent. The spicules are uniaxial and are not very distinct in the figure. Thin section, X 5. "Dark limestone," Pine Spring (station 2930).
	LINDSTROEMIA PERMIANA n. sp. (p. 97).
FIG. 13.	A somewhat rapidly enlarging specimen. Side view. "Dark limestone," Pine Spring (station 2930).
FIG. 14.	View of the calice, which in this case happens to be double by reason of a cessation and later a renewal of growth. The calice is really considerably deeper than it has been possible to represent in this view. "Dark limestone," Pine Spring (station 2930).
	LINDSTROEMIA PERMIANA var. (p. 99).
FIG. 15.	A pathologic specimen. A small example is growing attached at the right and may have occasioned the abnormal condition of the larger individual, which began to contract in size from the point at which the small one became attached. Side view. "Dark limestone," Pine Spring (station 2930).
	LINDSTROEMIA CYLINDRICA n. sp. (p. 99).
FIGS. 16 and 16a.	The type specimen.
16.	Side view.
16a.	View of the calice, which is really deeper than it has been possible to show in the figure. "Dark limestone," Pine Spring (station 2930).
	CLADOPORA SPINULATA n. sp. (p. 102).
FIGS. 17 and 17a.	A specimen with well-preserved spines.
17.	Side view of corallum.
17a.	Part of same, X 4. "Dark limestone," Pine Spring (station 2930).
	FISTULIPORA GRANDIS var. GUADALUPENSIS n. var. (p. 125).
FIG. 18.	The typical specimen. (For tangential section see Pl. XXV, fig. 7.) Longitudinal section, X 20. "Dark limestone," Pine Spring (station 2930).

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

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Last Updated: 05-Dec-2008