-
Planispiral is a
condition in
which a
tubicolous s**** is
coiled in a
single horizontal plane and the
diameter increases away from the axis of coiling...
-
limestones of the
Carboniferous period in Europe, the s**** of
which is
planispirally coiled and can be
mistaken for the s**** of a cephalopod.[citation needed]...
-
conical tube, the
growth of
which is
coiled into an
overall helical or
planispiral shape, for
reasons of both
strength and compactness. The
number of whorls...
- (Coniacian) of
France included in the Spirocyclinidae. The test is
planispirally to
slightly asymmetrically coiled,
rarely becoming straighter. Microspheric...
- used to
describe various kinds of
freshwater snails whose s**** are
planispiral,
meaning that the s**** is a flat coil. Such s****
resemble a coil of...
- sole
living cephalopods whose bony body
structure is
externalized as a
planispiral s****. The
animal can
withdraw completely into its s**** and
close the...
-
periods is
often possible.
Their fossil s****
usually take the form of
planispirals,
although some
helically spiraled and
nonspiraled forms (known as heteromorphs)...
-
Ismailia is a
genus of
foraminifera with an agglutinated,
planispirally coiled, semi-involute s****,
known from the
Egyptian Sinai, that
lived during...
-
Pseudospirocyclina is a
genus of
large planispirally coiled agglutinated benthic forams with a
complex interior known from the
upper Jur****ic (Kimmeridgian)...
- View of the
spire side of the
planispiral s**** of the
freshwater snail Anisus septemgyratus. The body
whorl is the
outermost complete revolution of the...
