LIFE 



431. JURASSIC QELENTERATA AND I :< m\om KM \ i -\. ( / and b, Tham- 

 slnrii proliftrn Becker, a complete corallum, and the lateral surfai e of a costal 

 septum, enlarged; c, Thccosmilia tricholoma (Goldf.); d, Pcntiicrinits briarctts Mill; 

 e, Cidiiris coronata Goldf. 



skates and rays began their modern career; the existing family 

 (Chiniceridce) of sea-cats or spook-fishes made its appearance, so 

 far as fossils show (Fig. 434); the forebears of the living garpikes 



