PLATE LXXVIII. 259 
LINNARSSONELLA GIRTYI Walcott (p. 666). 
[Pl. LX XIX, figs. 1, la-r.] 
Fiaures 5 and 5’. Top and side views of ventral valve from Locality 32t, Upper Cambrian limestone in Fandango 
Spring Canyon on the east side of the Dugway Range, about 5 miles (8 km.) north of where the stage 
road between Vernon and Deep Creek crosses the divide, Tooele County, Utah. U.S. Nat. Mus. Cat. 
No. 52195a. 
5a. Exterior view of dorsal valve associated with the specimen represented by figure 5. U.S. Nat. Mus. Cat. 
No. 52195b. 
LINNARSSONELLA TRANSVERSA Walcott (p. 670). 
Fieures 6, 6’, and 6’. Top, side, and back views of ventral valve from Locality 30j, Upper Cambrian limestone in le 
of the Orr formation on Orr Ridge, about 5 miles (8 km.) south of Marjum Pass [Walcott, 1908f, p. 176 
and Pl. XIII], House Range, Utah. U.S. Nat. Mus. Cat. No. 52201la. Figures 6 and 6/ are copied 
from Walcott [1908d, Pl. IX, figs. 6 and 6’]. This is the type specimen. 
6a, 6b, and 6c. Partly exfoliated dorsal valves associated with the specimen represented by figure 6. U.S. 
Nat. Mus. Cat. Nos. 52201b, 52201c, and 52201d, respectively. 
LINNARSSONELLA NITENS Walcott (p. 669). 
Ficures 7, 7’, and 7’’. Top, side, and back views of ventral valve from Locality 31t, Upper Cambrian limestone in 1d 
i of the Orr formation on Orr Ridge, about 5 miles (8 km.) south of Marjum Pass [Walcott 1908f, p. 176 
and Pl. XIII], House Range, Utah. U.S. Nat. Mus. Cat. No. 52198a. Figures 7 and 7’ are copied 
from Walcott [1908d, Pl. CX, figs. 7 and 7’]. This is the type specimen. 
7a. Partly exfoliated dorsal valve associated with the specimen represented by figure 7. U.S. Nat. Mus. 
Cat. No. 52198b. 
LINNARSSONELLA MOoDESTA Walcott (p. 668). 
Fieurss 8, 8’, and 8”. Top, side, and back views of ventral valve from Locality 31t, Upper Cambrian limestone in 
1d of the Orr formation on Orr Ridge, about 5 miles (8 km.) south of Marjum Pass [Walcott, 1908f, p. 
176and Pl. XIII], House Range, Utah. U.S. Nat. Mus. Cat. No. 53679a. Figures 8 and 8’ are copied 
from Walcott [1908d, Pl. LX, figs. 8 and 87]. 
8a. A more acuminate ventral valve than that represented by figure 8. U.S. Nat. Mus. Cat. No. 52197e. 
8b and 8b’. Exterior and back views of a partly exfoliated ventral valve. U.S. Nat. Mus. Cat. No. 52197b. 
8c and 8d. Partly exfoliated ventral valves. U.S. Nat. Mus. Cat. Nos. 52197¢ and 52197d, respectively. 
8e. Interior of ventral valve, the type specimen. U.S. Nat. Mus. Cat. No. 52197a. Copied from Walcott 
[1908d, Pl. IX, fig. 8a]. 
8f. Interior of dorsal valve. U.S. Nat. Mus. Cat. No. 52197f. 
The specimens represented by figures 8a-f are from Locality 30k, 25 feet below Locality 31t (fig. 8), at the same 
place on Orr Ridge. 
LINNARSSONELLA URANIA Walcott (p. 670). 
Figure 9. Partly exfoliated dorsal valve. U.S. Nat. Mus. Cat. No. 52202d. 
9a, 9a’, and 9a’’. Top, side, and back views of a partly exfoliated ventral valve. U.S. Nat. Mus. Cat. No. 
52202a. Figure 9a is copied from Walcott [1908d, Pl. IX, fig. 9]. This is the type specimen. 
9b. Interior of ventral valve. U.S. Nat. Mus. Cat. No. 52202c. 
9c. Interior of dorsal valve. U.S. Nat. Mus. Cat. No. 52202b. Copied from Walcott [1908d, Pl. IX, fig. 9a]. 
The specimens represented are all from Locality 55u, Middle Cambrian limestone 0.25 mile (0.4 km.) below the 
Maxfield mine, in Big Cottonwood Canyon, on the west side of the Wasatch Mountains, southeast of Salt Lake City, Utah. 
