Page 223 - Introduction to Paleobiology and The Fossil Record

uniserial biserial triserial trochospiral planispiral quinqueloculine
Figure 9.4 Main types of foraminiferan chamber construction.

(c)

(a)
(d)
(b)

(g) (h)
(f)
(e)

(i) (j) (k) (l)

Figure 9.5 Some genera of foraminiferans: (a) Textularia, (b) Cribrostomoides, (c) Milionella,
(d) Sprirolina, (e) Brizalina, (f) Pyrgo, (g) Elphidium, (h) Nonion, (i) Cibicides, (j) Globigerina,
(k) Globorotalia, and (l) Elphidium (another species). Magnifi cation ×50–100 for all. (Courtesy of John
Murray (b, d, e, g, h, j, k) and Euan Clarkson (a, c, f, i, l).)