FAMILY 12. FUSULINIDAE 135 



Test globular or fusiform, generally very small, the longest 

 axis lying in the axis of the whorls ; early volutions endothyrian, 

 spherical and asymmetrical ; wall thin and mesh-structure often 

 obsolete, deposition layers rarely developed; septa almost plane; 

 buccal aperture relatively large, no septal perforations. 



Permian. 



This may be directly derived from Endothyra. 



Subfamily 2. Verbeekininae 



• Test spheroidal or fusiform ; wall composed essentially of thin 

 lamella and mesh work, the latter absent in specialized forms, 

 septa not folded ; aperture consisting of numerous openings, 

 basal skeletons well developed ; septal perforations wanting. 

 Permian. 



Genus VERBEEKINA Staff, 1909 



Plate 14, figures 11, 12 

 Genotype, Fusulina verheeki Geinitz 



Verbeekina Staff, Neues Jahrbuch, Beil. Bd. 27, 1909, p. 476. 



Fusulina Geinitz (not Moller), Paleontographica, vol. 22, 1876, p. 400. 



Schwagerina (part) Moller, Mem. Acad. Imp. Sci. St. Petersbourg, ser. 



7, vol. 27, no. 5, 1879, p. 73. 

 Mollerina (part) Schellwien, Paleontographica, vol. 44, 1898, p. 258. 

 DolioUna (part) Schellwien, in Futterer's "Durch Asien", vol. 3, 1902. 



Test spheroidal to ellipsoidal, earlier volutions like Endothyra; 

 wall composed of thin lamella and mesh-structure; basal skele- 

 tons indistinct in earlier whorls. 



Permian. 



Genus DOLIOLINA Schellwien, 1902 



Plate 15, fig-ures 1, 2 

 Genotype, Schwagerina lejrida Schwager 



DolioUna (part) Schellwien, in Futterer's "Durch Asien", vol. 3, 1902, 



p. 125. 

 DolioUna Staff, Neues Jahrb. Beil. Bd. 27, 1909, p. 476. 

 Mollerina Schellwien, Paleontographica, vol. 44, 1898, p. 258. 

 Schwageriria (part) Schwager, in Richtofen's China, vol. 4, 1883, p. 



138. 



Test cylindrical ; wall, thin, composed of compact thin lamella 



