110 
Gustaf T. Troedsson 
Fig. 28. Samma art. */i. Pressad skalkärna; den breda ändan visar endast avtrycket efter 
dorsalsidan. Lokal 17, Tommarp. 
» 29. Samma art. 2 /i. Operkulum. Lokal T 8— T 9, Tommarp. 
» 30. Hyolithus fibrosus n. sp. a) Avtryck av det spetsiga skalet, 2 /i. b) Stenkärna, 2 /i. 
c) Förstorad del av avtrycket, visande skulpturen, 8 /i, Fig. c har råkat bli upp- och 
nedvänd. Lokal III i, Röstånga. 
Plate II. 
1. Left valve. 
2. Right valve, b. and c. Outlines of convexity. 
3. Two compressed valves, the uppermost is a left one. 
4. Right valve. 
5. Left valve. 
6. Left valve, b. and c. Outlines of convexity, 
7. Internal cast of left valve. 
8. Right valve. 
9. Left valve with transverse outline. 
10. Left valve. 
11. Internal cast of left valve, b. Edge view. 
12. Internal cast of right valve with remainders of the shell. 
13. Left valve. 
14. Right valve. 
15. Left valve. 
16. Right valve. 
17. Left valve. 
18. Right valve.' b. Longitudinal outline. 
19. Left valve, b. Edge view. 
20. Right valve. 
21. Left valve. 
22. Right valve, b. Edge view. 
23. Head and two segments of thorax, b. The remaining thorax and the pygidinm. 
24. Head. b. Side view. 
25. a. Cranidium. b. Fragment of thorax. 
26. Operculum (see p. 91). 
27. Fragment of the tube. 
28. Internal cast of a compressed tube. 
29. Operculum. 
30. a. External cast of the tube. b. Internal cast. e. Magnified part of a. 
