xviii INVERTEBRATE PALAEONTOLOGY 



FACING PAGE 



PLATE XIII 184-185 



MESOZOIC FOSSILS 



FIG. 



1. Isastraea explanata, Corallian, Shellingford, Berks. 



2. Apiocrinus parkinsoni. Bradford Clay, Bradford, Wilts. 



3. Paracidaris florigcmma. Corallian, Stanford in the Vale. 



4. Phymosoma koenigi. Upper Chalk, near Kingsclere, Hants. 



(The reconstruction of the apical system is hypothetical. ) 



5. Nudeolites scutatus. Corallian, Marcham, Berks. 



6. Micraster coranguinum. Upper Chalk, Ecchinswell, Hants. 



7. Cydothyris plicatilis. Upper Chalk, near Newbury. 



8. " Terebratula " phillipsi. Bathonian, Burton Bradstock, Dorset. 



9. Zeilleria digona. Bradford Clay. Interior of dorsal valve. 



(After Davidson. ) 



10. Spirifarina cf. walcotti. Lower Lias, Timsbury, Radstock. 



PLATE XIV 184-185 



MESOZOIC FOSSILS 



1. Trigonia striata. Bathonian, Burton Bradstock, Dorset. 



2. Trigonia davdlata. Corallian, Marcham. 



3. Modiolus sp. Bathonian, Burton Bradstock. 



4. Pleurotomaria reticulata. Kimmeridge Clay, Weymouth. 



5. " Natica" bajociensis. Bathonian, Burton Bradstock. 



6. Amaltheus margaritatus. Middle Lias, Runswick Bay, Yorks. 



7. Cosmoceras jason. Oxford Clay, St. Ives. 



8. Scaphitessy. Upper Chalk. 



9. Bdemnitella mucronata. Upper Chalk, Arreton, Isle of Wight, 

 10. Palaeocorystes sp. Gault, Folkestone. 



