J 10 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



PLATE 9. 

 CHico (upper cretaceous) fossils. 

 (Unless otherwise stated, all figures are natural size.) page 



Crassatcllifcs triangulatus, new species. 59 



Fig. 1. Large right valve; long. 40 mm., alt. yZ mm. Loc. 3, L. S. 

 J. U. Pal. Coll. 



Cinulia obliqua Gabb. 66 



Fig. 2. Back and top of average size specimen. Loc. 2, L. S. J. U. 

 Pal. Coll. 



Turris plicata, new species. 68 



Fig. 3. Back of imperfect specimen. Loc. 2, L. S. J. U. Pal. Coll. 



Pinna calamitoides Shumard. 64 



Fig 4 Inside cast showing cross ribbing. Loc. 3, L. S. J. U. Pal. 



Cancellaria crassa, new species. oo 



Fig. 5. Back view; alt. 22 mm. Loc. 2, L. S. J. U. Pal. Coll. 



Gyrodcs comprcssiis, new species. 67 



Fig. 6. Back and top of average size specimen; alt. 17 mm., great- 

 est diameter 18 mm. Loc. 1, L. S. J. U. Pal. Coll. 



Gyrodes canadensis Whiteaves. 66 



Fig 7 Top and part of side; greatest diameter 17 mm. Loc. 1, 

 L. S. J. U. Pal. Coll. 



Rostellites gabbi White. 68 



Fig. 8. Front of imperfect specimen. Loc. 1, L. S. J. U. Pal. Coll. 



Amauropsis oviformis Gabb. 65 



Fig. 9. Back view. Loc. 2, L. S. J. U. Pal. Coll. 



Pugnclhis rotundus, new species. 67 



Fig 10 Inside cast of imperfect specimen. Loc. 3, L. S. J. U. 

 Pal. Coll. 



Bacnlites chicoensis Trask. 69 



Fig 11 Side of imperfect specimen showing septae. Loc. 1, L. S. 

 J. U. Pal. Coll. 



Turritella chicoensis Gabb. 69 



Fig. 12. Three whorls of a large specimen. Loc. 2, L. S. J. U. 

 Pal. Coll. 



Amphiura lymani, new species. 58 



Fig. 13. Impression in hard shale. Loc. 2, L. S. J. U. Pal. Coll. 



Scutella (f), species. 58 



Fig. 14. Top of imperfect specimen. Loc. 2, L. S. J. U. Pal. Coll. 



Hauericeras transitionale, new species. 69 



Fig. 15. Side of broken specimen. Loc. 2, L. S. J. U. Pal. Coll. 



Placenticeras californicum Anderson. 70 



Fig. 16. Adult specimen, X^. Loc. 3, L. S. J. U. Pal. Coll. 

 I'ig. 17. Young specimen, X5^. Loc. 3, L. S. J. U. Pal. Coll. 



Placenticeras paciUcum Smith. 70 



Fig. 18. Adult specimen, XYi- Loc. 3, L. S. J. U. Pal. Coll. 

 Fig. 19. Young specimen, XYz- Loc. 3, L. S. J. U. Pal. Coll. 



Placenticeras sanctcemonicce, new species. 70 



Fig. 20. Adult specimen, X%. Loc. 3, L. S. J. U. Pal. Coll. 

 Fig. 21. Young specimen, XVi- Loc. 3, L. S. J. U. Pal. Coll. 



This species is intermediate between P. paciUcum and P. cali- 

 fornicum. ^ , . . , • • no 

 Solariaxis templetom, new species. oH 



Fig. 22. Front of specimen. Loc. 2, L. S. J. U. Pal. Coll. 



