PLATE XIII. 
Figs. l-3c. HUSTEDIA BRENTWOODENSIS n. sp. p. 195 
1, la, lb, Ic, 2, 2a, 2b, 2c, 3, 3a, 3b, 3c. Pedicle, brachial, anterior, and 
lateral views of three of the cotypes. Brentwood limestone, 
Station 135. 
Figs. 4-6c. HUSTEDIA MISERI n. sp p. 196 
4, 4a, 4b, 4c, 5, 5a, 5b, 5c, 6, 6a, 6b, 6c. Pedicle, brachial, anterior, and 
lateral views of three of the cotypes. Brentwood limestone. 
Stations 135 and 210. 
Figs. 7, 8. SPIRIFERINA TRANSVERSA (McChesney) p. 192 
7. Anterior view of a nearly complete specimen. Brentwood lime- 
stone, Station 135. 
8. A brachial valve preserved as an internal cast. Kessler lime- 
stone, Station 209. 
Figs. 9-lOa. SPIRIFERINA CAMPESTRIS White p. 193 
9., 9a. Pedicle and anterior views of a typical specimen. Hale for- 
mation, Station 136. 
10, 10a. Pedicle and anterior views of a larger individual. Brent- 
wood limestone. Station 147. 
Figs. 11-15C. COMPOSITA OZARKANA n. sp p. 198 
11, 11a, 13, 13a. Pedicle and anterior views of two typical specimens. 
Hale formation. Station 137. 
12, 12a, 14, 14a. Pedicle and anterior views of two other individuals 
associated with the holotype. 
15, 15a, 15b, 15c. Brachial, pedicle, lateral, and anterior views of the 
holotype. Brentwood limestone. Station 138. 
Figs. 16-18C. COMPOSITA GIBBOSA n. sp p. 204 
16, 16a, 17, 17a. Pedicle and brachial views of two typical specimens. 
Morrow formation. Station 304. 
18, 18a, 18b, 18c. Pedicle, brachial, anterior, and lateral views of the 
holotype. Brentwood limestone. Station 152. 
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