l62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I48 



Internal structures of Chinese Devonian species that Grabau as- 

 signed to Camarophoria (other than C. sutschuanensis and C. bitingi) 

 are neither described nor illustrated. Externally they resemble species 

 of Coledium n. gen. but, in absence of knowledge of internal structures, 

 their relationships cannot be determined. 



GENERA NO LONGER INCLUDED IN 

 STENOSCISMATACEA 



Genus LIOCOELIA Schuchert and Cooper 1931 

 Genus NANTANELLA Grabau 1936 



Discussion. — Grabau (1936, p. 70) described the genus Nantanella, 

 with type species N. mapingensis Grabau from the Early Permian of 

 China, assigning it to the superfamily Camerophoriacea Grabau, family 

 Camerophoridae Waagen. Externally it resembles stenoscismatids as 

 well as many other general rhynchonelloid forms. Grabau's sketch of 

 the internal structures (1936, text-fig. 1) is ambiguous; the cut was 

 made so far posterior that the hinge plate is visible ; it is impossible to 

 tell whether the branches of the brachial median septum are parts of 

 the hinge plate, or of a camarophorium. In most stenoscismataceans, 

 however, the edges of the camarophorium are visible dorsal to the 

 hinge plate, where none show in Grabau's sketch. In his discussion of 

 the interior of Nantanella, Grabau mentioned only the spondylium, 

 median septum, and hinge plate, comparing them to internal structures 

 of Liocoelia Schuchert and Cooper ( 1932, p. 189, text-fig. 36) . 



Schuchert and Cooper (1932) compared Liocoelia with Camero- 

 phoria: "It would thus appear that Liocoelia is essentially a smooth 

 Camerophoria having an external form like that of Clorinda, Merista 

 or Meristella." Cooper (1956, p. 523) in his discussion of the genus 

 Psilocamara, said that "This genus differs from Stenoscisma and 

 Nantanella in having a smooth, non-plicated exterior ; otherwise it is 

 similar to other members of the Stenoscismatidae." Thus he implied 

 that Nantanella and, by inference, Liocoelia belong to the Stenoscis- 

 matacea. Cooper now (oral communication, 1962) agrees that these 

 two genera are not Stenoscismatacea, inasmuch as the diagnostic 

 camarophorium is absent. Only the spondylium provides internal 

 similarity to the Stenoscismatacea; that structure occurs widely 

 throughout the Brachiopoda and is not, in itself, a reliable criterion of 

 relationship. 



Genus CAMAROPHORELLA Hall and Clarke 1894 



Camarophoria (Camarophorella) HALL, J., and CLARKE, J. M., 1894, New 

 York, 13th Ann. Rept. State Geologist, p. 838 ; 1894, Paleont. New York, vol. 

 8, pt. 2, p. 215. 



