Isastrea turbinata 
. 
i JL 
Isastrea turbinata Duncan. 
PI. figs. 
1863. Isastraea turbinata , Duncan, Quart • Jour* Geol. Soc. London 
Vol. XIX, p. 423, PI. XIV, figs. 1 a - 1 c. 
1866. Isastraea turbinata , Puchassaing & Micheiotti, Sup. Mem. 
Corall. Antilles, p. 89 (of reprint). 
1867. Isastraea turbinata , Duncan, Quart. Jour. Geol. Soc. London 
Vol. XXIV, p. 25. 
1870. Isastraea turbinata , Buehas suing, Rev* Zooph. Antilles, 
p . 31. 
Original description: 
"Corallum 7 inches high, subplane and irregularly convex 
above, broad and gibbous at the sides, small and conical at the 
base, whence the corallites radiate; upper surface ridged with 
the elevated margins of more or less polygonal, close calices. 
Corallites very long, slender, and prismatic, excessively crowded. 
Walls united, simple throughout. Calices very numerous, ir- 
