CORALS AND CORALLIFORM TYPES. 4S 



Fam. 1. CyathophijUidœ. 



Group A. — Tesselati : Compound vesiculo-stellate Ci/aihophi/llidœ coraposed of closely 

 united corallites, forming mosaic-like, tesselated or asteroidal groups. 



Cyathogonium, E. J. C. ( = tesselated forms of Cyatliophyllum ; also 



Strombodes and Acervularia), Sil., Dev., Carb. 

 Heliogonium , E. J. C. ( = tesselated forms of Heliophyllum), Sil., Dev. 

 Phillipsaslrcea, E. & H. (including Pachyphyllum), Dev., Carb. 



G-roup B. — Arundinacei : Vesiculo-stellate Cyalhophyllidœ, composed of reed-like or 

 tubular corallites, either simple or in partially connected groups. 



Cannophyllum, E. J. C. ( = reed-like forms of Cyatliophyllum), Dev., Carb. 

 Bipliyphyllum, Lonsd. (including Slylaslrea), Sil., Carb. 

 Eridopliyllum, E. & H., Sil., Dev: 



Group C. — Corniculati: Simple vesiculo-stellate Cyathophyllidœ oi raoxe ox \qss comic-àl 

 or horn-like form. 



Cyatliophyllum, Goldf. (including Dicophyllum and Campophyllum), Sil., 



Dev., Carb. 

 Heliophyllum (including Acanthophyllum), Sil., Dev. 

 Blothrophyllum, Bill., Dev. 

 ClisiophyUum, Dana, Sil., Dev., Carb. 

 (Pycnophyllum, Linds., Sil. ?) 

 Strephodes, McCoy, Sil., Dev., Carb. 



Fam. 2. Lonsdalidce. 



Group A. — Aggregali: Compound forms of iowsc^aZtcfe. 



Lonsdalia, McCoy (including Stylidophyllum), Carb. 



Lithoslrotion (including Koninc/coj/hyllum in part, Pelalaxis, Stylaxis, etc.), 

 Carb. 



Group B. — Turbinati : Simple, more or less turbinated or hoin-like forms of Lons- 

 dalidœ : 



Axophyllum, E. & H., Carb. 



Komnckophyllum (?) Nich. ( = simple forms of Lithoslrotion), Carb. 



Fam. 3. Slauridœ : — Primary septa forming a rectangular cross : 



Group A. — Tesselati: Compound tesselated forms of S^awric^œ : 



Slauria, E. & H., Sil. 



Group B. — Turbinati: Simple forms oî Slauridœ : 



' Omphyma, Raf., Sil. 



