420 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXXIy. 
Following these red beds are shales and limestones holding an 
abundance of brachiopods. <A discussion of these strata follows. - 
In the discussion of the Lower Helderberg rocks, Safford, in his 
Geology of Tennessée, described a locality near Esq. A. B. Gant’s 
home, on Indian Creek, in Wayne County, 14 miles from Waynes- 
boro and 22 from Savannah, where a bed of limestone, holding a 
fauna of more or less mixed character, was presented immediately 
below the Black shale and above the Meniscus layers. The section 
here, as given by Professor Safford, is as follows: 
Feet. 
(4) Black Shale Group, represented by its lowest member—the sandstone_ 
(8) A layer of gray limestone, containing the fossils of column C, which 
are. Stlicified: 2223 eee Oh eS A reece A ee 10 
(2) SPEC; LOCKS NO TSEC eae NE Be ae Nee er ee 8 
(1) Argillaceous limestone at the foot of the hill, which may be referable 
to the Meniscus formation 
Ot 
The list (column C) mentioned in the section was of brachiopods 
abouts equally divided between the Niagaran and ‘* Lower Helder- 
berg” species. The bed was, therefore, apparently transitional and 
of considerable interest in an area where the Niagaran and Helder- 
bergian were elsewhere unconformable. 
Doctor Foerste included this locality in his studies and found that 
a considerable stratigraphic interval separated layer 3 of Professor 
Safford’s section from the Hardin sandstone (layer 4). He also 
proposed that “ for purposes of discussion it will be found convenient 
to apply thé name Gant limestone to the coarse sandy limestone 
under discussion |layer 3], and the term Gant bed to the top of 
Silurian section, including the Gant limestone at its base.” At the 
Gant locality he found the “ Gant limestone ” to contain Spirifer saf- 
jordi, Dictyonella gibbosa, Nucleospira concentrica, Wilsonia saff ordi 
Uncinulus stricklandi, and Schuchertella (Orthothetes) subplanus. 
At other localities in the vicinity the “‘ Gant limestone ” was found to 
contain Jeristina maria-roemeri and Gypidula roemeri, in addition 
to the brachiopods already mentioned, and beneath this lmestone 
were found whitish clays and soft limestone containing sponges, 
brachiopods, and crinoids characteristic of the Glade exposures of 
the Beech River formation. 
The following section, which has been compiled from Foerste’s 
remarks upon this subject, is rather characteristic of his “ Gant bed ” 
in apparently the only area where it has hitherto been recognized. 
Section on hillside just northeast of Martin’s mill, Tennessee. 
Bob formation. Feet. 
Layer C. Much weathered and poorly exposed limestone with Asty- 
lospongia praemorsa, OCaryomanon § stellatim-sulcatum, Meristina 
maria-roemeri, and Wilsonia sajfordi___-_ == = = ee 14 
