-
characterized by
calcareous tests consisting of an
undivided planispirally to
trochospirally coiled tubular second chamber wound around the
initial proloculus, and...
-
composed of
chambers that are not
elongated radially but are
rounded and
trochospiral. As the
organism grows,
these chambers enlarge rapidly,
typically reaching...
-
produced calcareous tests with a
proloculus followed by an
undivided trochospirally enrolled tubular second chamber, in
which the
spiral side has prominent...
-
Globigerinids are
characterized by
distinctly perforate planispiral or
trochospiral tests composed of
lamellar radial hyaline (gl****y) calcite, with typically...
- s****. The s**** are
planispirally coiled (flat coiled)
rather than
trochospirally with a
spire as is the case with most s****ed gastropods.
Knight et...
- evolute,
aragonitic tests consisting of an
undivided planispiral or
trochospiral tubular chamber wound about the proloculus, or
initial chamber. The umbilical...
- to recent,
benthic foraminifera in
which tests are
planispirally to
trochospirally coiled, with
chambers provided with an
internal partition and hyaline...
-
supplementary sutural apertures on the
umbilical side.
Their test is free,
trochospirally enrolled, and umbilicate. The
equatorial periphery is lobate, while...
- Tappan, 1988) in
which the test may be free or attached,
planispiral or
trochospiral,
evolute or involute,
spreading or discoidal. The proloculus, or initial...
-
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)...
