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Globigerinids are
characterized by
distinctly perforate planispiral or
trochospiral tests composed of
lamellar radial hyaline (gl****y) calcite, with typically...
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composed of
chambers that are not
elongated radially but are
rounded and
trochospiral. As the
organism grows,
these chambers enlarge rapidly,
typically reaching...
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range from the Jur****ic to recent. Test are
commonly planospiral or
trochospiral but may be
uniserial to
multiserial and are of
secreted hyaline (gl****y)...
- part of the Nonionacea, s****, or tests, of
which are
planispiral or
trochospiral,
calcareous and
finely perforate.
Includes the Nonioninae, Pulleniinae...
- Atlantic,
Pacific and
Indian Oceans,
related to Rosalina. The test is
trochospiral and planoconvex, with a
broadly rounded periphery and
about six to nine...
- to
Holocene agglutinated benthic textulariid Foraminifera.
Tests are
trochospiral, triserial, or
biserial in
early stages;
later may be
biserial or uniserial...
- of
perforate hyaline calcite.
Tests may be planospiral, low or high
trochospiral, or serial.
Interiors may be
complex with
secondary chambers and interconnecting...
- suborder, Lytoceratina. The s**** of
Turrilites is
tightly wound in a high
trochospiral, with an
acute angle at the apex. Ribs are weak to
strong and may have...
- evolute,
aragonitic tests consisting of an
undivided planispiral or
trochospiral tubular chamber wound about the proloculus, or
initial chamber. The umbilical...
-
characterized by an
attached test with
early chambers in an
irregular trochospiral,
later chambers numerous in a m****ive or
branching structure growing...
