NO. 2 BRACHIOPOD SUPERFAMILY STENOSCISMATACEA — GRANT 87 



CAMAROPHORINELLA CAUCASICA Licharev 



Plate 4, fig. 5 ; figure 17 



Camarophoria (Camarophorinella) caucasica LICHAREV, B., 1936, Am. Journ. 



Sci., ser. 5, vol. 32, No. 187, p. 63, text fig. 4. 

 Camarophorinella caucasica Licharev, LICHAREV, B., 1960, Osnovi Paleont., 



Moscow, p. 250, text fig. 292 (not 294), pi. 49, fig. 1. 



Shell small, transversely subtrigonal to subelliptical, moderately 

 strongly biconvex ; greatest width near or anterior to midlength ; fold 

 low, broad, flat-crested, beginning about 5 mm. anterior to brachial 

 beak, standing only slightly above flanks, height increasing anteriorly ; 

 sulcus shallow beginning just anterior to pedicle beak; costae low, 

 rounded, number increasing anteriorly by intercalation or bifurcation, 

 numbering about 4—6 on fold (depending on length of shell), one fewer 

 in sulcus, about 6 or 7 on each flank ; growth laminae widely spaced, 

 weak but distinct, other concentric ornamentation not observed. 



Pedicle valve moderately and evenly convex longitudinally and 

 transversely ; beak short, obtusely pointed. 



Brachial valve slightly more strongly convex ; beak slightly swollen, 

 not protruding. 



Pedicle valve interior with large spondylium supported by low, 

 thick median septum in posterior, plates of spondylium and septum 

 becoming thinner anteriorly, septum slightly more elevated toward 

 anterior. 



Brachial valve interior with divided hinge plate supported by sides 

 of trough of camarophorium in posterior ; camarophorium extending 

 anteriorly well beyond hinge plate, height of median septum increasing 

 anteriorly, elevating camarophorium. 



Discussion. — The above descriptions are based on illustrations in 



ABC D E 



Fig. 17. — Camarophorinella caucasica Licharev, Permian, North Caucasus 

 transverse sections Xca.3, from Licharev, 1936 text-fig. 4. 



A. Cardinal process visible, Licharev's fig. b. B. Hinge plate divided, joined 

 to edges of camarophorium, Licharev's fig. c. C. Licharev's fig. d. D. Hinge 

 plate reduced, camarophorium and spondylium detached from shell proximally, 

 Licharev's fig. e. E. Camarophorium and spondylium thin, Licharev's fig. g. 



