NO. 2 BRACHIOPOD SUPERFAMILY STENOSCISMATACEA — GRANT 163 



Camarophorella Hall and Clarke, HYDE, J. W., 1908, Boston Nat. Hist. Soc. 

 Proc, vol. 34, No. 3, p. 35-65, pi. 6-10. 



Discussion. — Hall and Clarke based this genus on Pentamerus 

 lenticularis White and Whitfield (1862) from the "yellow sandstones 

 beneath the Burlington Limestone at Burlington, Iowa." They re- 

 marked its external differences from species of Camarophoria, but 

 treated it as a subgenus in the belief that its internal structures were 

 essentially similar. Hyde (1908) made an exhaustive study of C. 

 lenticularis and similar Mississippian C. mutabilis Hyde, concluding 

 that Camarophorella is a distinct genus of the spire-bearing meristel- 

 loid group. 



Weller (1914) in his comprehensive study of the Mississippian 

 brachiopods of the Mississippi Valley, investigated C. lenticularis from 

 the yellow sandstones of the upper Kinderhook at Burlington, Iowa. 

 He failed to find spiralia in his specimens, but accepted Hyde's analysis 

 and assigned Camarophorella to the Meristellidae. These conclusions 

 appear to be sound; the genus is not considered a member of the 

 Stenoscismatacea. 



Genus PSEUDOCAMAROPHORIA Wedekind, 1926 



Pseudo camarophoria WEDEKIND, R., 1926, in Salomon, et al., Grundz der 



Geol., bd. 2, p. 197. 

 Septalaria LEIDHOLD, C, 1928, Abh. Preuss. Geol. Lands., p. 35 ; SCHMIDT, 



H, 1941, Abh. Senck. Nat. Gesell., 459, p. 35 ; HAVLICEK, V., 1961, Roz. 



Ustr. Usta. Geol., No. 27, p. 180. 



Diagnosis. — Rhynchonelliform, fold and sulcus strong, costae nor- 

 mally present, strong near anterior; high median septum in brachial 

 valve (wing- shaped in longitudinal profile), hinge plate undivided; 

 neither dental plates nor spondylium in pedicle valve. 



Discussion. — This Middle Devonian genus from the German Eife- 

 lian has been compared closely with Stenoscisma (then Camerophoria) 

 although not formally classified with the Stenoscismatacea (Leidhold, 

 1928 ; Schmidt, 1941 ) . The profile of the median septum of the brachial 

 valve is closely similar to that of the camarophorium (and its septum) 

 of the Stenoscismatacea (Leidhold, 1928, pi. 3, fig. 3). However, the 

 septum of P seudo camarophoria is unmodified, without the troughlike 

 ventral edge that forms the camarophorium. The pedicle valve of 

 Pseudocamarophoria has no dental plates, and no spondylium. There- 

 fore, the genus is merely a rhynchonelloid with a high median septum, 

 whose external shape is similar to that of some later genera of Steno- 

 scismatacea. 



Pseudocamarophoria may be related to the Stenoscismatacea. The 

 probable ancestor of that superfamily might have had a high septum in 



