planispiral meaning in Hindi

Examples

1. The shell of species within this family varies from planispiral to needle-shaped.
2. The shape of the shell is planispiral.
3. This is an easily recognizable species : the shell is flat-coiled ( planispiral ).
4. Many cephalopods and tubeworms can also have a planispiral shell ( Allaby and Allaby, 1999 ).
5. The test is free, starting with a brief planispiral coil followed by a straight uncoiled stage.
6. The shells are conical and curved in a planispiral way, and they are usually whitish in color.
7. In a few gastropod families the shells are not helical in their coiling, but instead are planispiral, flat-coiled.
8. Those in the Globorotaliacea are typically trochospiral and smooth while those in the Globigerinacea are trochospiral to planispiral in arrangement and spinose.
9. A spiral shell can be visualized as consisting of a long helical or planispiral shape, for reasons of both strength and compactness.
10. Asterigerinacea are characterized by a trochospiral or nearly planispiral arrangement of the chambers, which are fully or partially subdivided by internal partitions.