Definition of Planispirally. Meaning of Planispirally. Synonyms of Planispirally

- 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...
- geologic time periods. Their fossil s**** usually take the form of planispirals, although some helically spiraled and nonspiraled forms (known as heteromorphs)...
- 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]...
- 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...
- 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...
- snails. The word is also applied to the depressed central area on the planispiral coiled s**** of Nautilus species and fossil ammonites. (These are not...
- smaller than 5 centimeters (2.0 inches) in diameter. The s**** is always planispirally coiled, unlike those of Mesozoic ammonites in which some are trochoidal...
- sole living cephalopods whose bony body structure is externalized as a planispiral s****. The animal can withdraw completely into its s**** and close the...
- families the s**** are not helical in their coiling, but instead are planispiral, flat-coiled. In these s****, the spire does not have a raised point...
- Rotularia is an extinct genus of planispirally coiled fossil polychaete worms in the family Serpulidae. Owing to the gastropod-like shape of Rotularia...