Chemistry Reference
In-Depth Information
Figure 11.
Nannoliths. Two examples of species with life cycles involving heterococcoliths and nannoliths
rather than heterococcoliths and holococcoliths. (A
C)
Ceratolithus cristatus:
(A) collapsed combination
coccosphere with heterococcoliths and ceratolith nannolith; (B) coccosphere of heterococcoliths; (C)
isolated ceratolith. (D
−
F)
Alisphaera
: (D) isolated nannoliths, minute cup-shaped aragonitic liths (also
known as
Polycrater galapagensis
); (E) coccosphere of the heterococcolith phase; (F) coccosphere of the
nannolith (“
Polycrater
”) phase.
−
