- 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...
-
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)...
-
Sphaeroidinidae –
Discorbacea with
strongly overlapping chambers,
arranged trochospirally or in
different planes; and
single slitlike or
multiple apertures. Sphaeroidina...
-
characterized by
calcareous tests consisting of an
undivided planispirally to
trochospirally coiled tubular second chamber wound around the
initial proloculus, and...
- to recent,
benthic foraminifera in
which tests are
planispirally to
trochospirally coiled, with
chambers provided with an
internal partition and hyaline...
- part of the Nonionacea, s****, or tests, of
which are
planispiral or
trochospiral,
calcareous and
finely perforate.
Includes the Nonioninae, Pulleniinae...
- of
perforate hyaline calcite.
Tests may be planospiral, low or high
trochospiral, or serial.
Interiors may be
complex with
secondary chambers and interconnecting...
- evolute,
aragonitic tests consisting of an
undivided planispiral or
trochospiral tubular chamber wound about the proloculus, or
initial chamber. The umbilical...
- Rosalina,
included in
discorbacean family Rosalinidae. The test is a
small trochospiral coil of few
whorls with a few
subglobular chambers per whorl. The test...
-
Paleocene to
recent benthic textulariid Foraminifera characterized by
trochospiral tests in the
early stage which may
become uniserial in the later. Walls...
