Contact us
 |
[email protected] |
 |
3275638434 |
 |
 |
| Paper Publishing WeChat |
Useful Links
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
The Origin of Spirula spirula (Linne, 1758)
Author(s)
E. O. Heyfetz
Full-Text PDF
XML 2544 Views
DOI:10.17265/1934-7391/2018.01.004
Affiliation(s)
Nachman mi Braslaw 14/3, Yaffo 6808998, Israel
ABSTRACT
The article presents evidence regarding
the origin of Spirula from spiral-shelled forms. The geological age of the species
is revised from the Miocene to the Jurassic. The causes of the reorientation of the shell are elucidated. The mode of life of the mollusk is specified.
The influence of the theory on facts perception is shown.
KEYWORDS
Buoyancy, chambers, distribution and geological age, guard, keels, mode of life, origin, orientation of the shell, phragmacone, proostracum, Spirula L.
Cite this paper
References