Fig. 20

Axial (a–g) and equatorial (h–l) sections of Orbitoides ‘medius’ from the Besni Formation in SE Turkey. Note the biconvex test with numerous cycles of lateral chamberlets and thick polar piles, and a thick equatorial layer. a TC7-47. b TC7-48. c TC7-43. d TC7-50. e TC7-44. f TC13-48. g TC13-47. h TC13-40. i TC8-78, j TC8-79. k TC13-43. l TC8-81