458 



MESOZOIC TIME — REPTILIAN AGE. 



3. Radiates. — (a.) Corals. — Fig. 718, Montlivaltia caryophyllata, from the 

 Bath Oolite; fig. 719, Prionastrea oblonga, Lower Oolite. Anabacia Orbulites 

 is a disk-shape coral of the Fungia family, from the Lower and Middle Oolite. 



Figs. 717-719. 



19 



WM*Msm\ 

 WAwmmm 



mMfMm 

 mwJmm 

 mmmm 



Sponge.— Fig. 717, Scyphia reticulata. Polyp-Corals.— Fig. 718, Montlivaltia caryophyllata ; 

 719, Prionastrsea oblonga. 



(b.) Echinodcrms. — Fig. 720, Apiocrinus Royssianus, from the Coral limestone, 

 — only the top and lower part of the stem given. Fig. 721, Saccocoma pectinata, 



Figs. 720-722. 



Echinodebms.— Fig. 720, Apiocrinus Royssianus (X %) ; 721, Saccocoma pectinata ; 722, 

 722 a, Cidaris Blumenbachii. 



Star-fish related to Comatula, from the Middle Oolite j fig. 722, Cidaris Blumen- 

 bachii; fig. 722 a, spine of same. 



