-
miliolid forams in
which the test may be free or attached,
planispiral or
trochospiral,
evolute or involute,
spreading or discoidal. The proloculus, or initial...
- 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)...
-
sutures on the
umbilical side." The test
forms a low to flat
umbilicate trochospiral, with four to five
petaloid chambers per whorl.
Sutures are
curved and...
-
Globigerinids are
characterized by
distinctly perforate planispiral or
trochospiral tests composed of
lamellar radial hyaline (gl****y) calcite, with typically...
-
Paleocene to
recent benthic textulariid Foraminifera characterized by
trochospiral tests in the
early stage which may
become uniserial in the later. Walls...
-
length of
about 11
centimetres (4.3 in). It is
tightly wound in a high
trochospiral, with an
acute angle at the apex. Ribs are weak, with rows of strong...
- a
cosmopolitan distribution. The test is an
asymmetrically biconvex trochospiral that may be bi-involute or
partially evolute on the
spiral side. Chambers...
- Tri****ic to the present,
characterized by
chambers arranged in a low
trochospiral; an
umbilical or
interiomarginal aperture, with or
without supplementary...
- the Cretaceous,
described by
Loeblich and Tappan, 1961, as: Test free,
trochospiral, biconvex, umbilicate,
periphery rounded with no
indication of keel or...
