(Forms lacking any definite main axis, and endospheric with respect to more than one concentric spheres
The Polyaxonia subendospherica are bodies in which, as in all Polyaxonia (and also in Homaxonia), no one axis stands out, i.e. while such a body does have unequal axes, they constitute different groups of axes (one group different from another). This implies that such bodies possesses one group of corners (vertices) which lie on the surface of one sphere, while another group of corners lie on the surface of another sphere, concentric with the first one. And this in such a way, i.e. the involved axes are distributed such, that the whole body shape deviates from a sphere and can even look more or less tetrahedral. Be this as it may, no one axis stands out, so the forms that belong here are no Protaxonia, meaning that no main axis can be distinguished here (like in all other Polyaxonia, and in Homaxonia).
Although no Organisms are to be expected to have realized Polyaxonia subendospherica, several crystals (from the Isometric System) represent this basic form in several (promorphological) species. These species are represented by the following promorphological categories :
The Subendosphaerica gyroidea are based on geometric bodies called Gyroids or Pentagonal Icositetrahedra. The symmetry content of such bodies is : 4 3 2, which corresponds to the Pentagonicositetrahedric Crystal Class of the Isometric Crystal System.
When you came from the document treating of the Promorphology of Crystals, and when you want to go back to it, click HERE, or click the BACK button of your browser.
The Subendosphaerica pyritoidea are based on geometric bodies called Pyritohedra or Pentagonal Dodecahedra. The symmetry content of such bodies is : 2/m 3*, which corresponds to the Duakisdodecahedric Crystal Class of the Isometric Crystal System.
When you came from the document treating of the Promorphology of Crystals, and when you want to go back to it, click HERE, or click the BACK button of your browser.
The Subendosphaerica tetartoidea are based on geometric bodies called Tetartoids or Tetrahedral Pentagonal Dodecahedra. The symmetry content of such bodies is : 2 3, which corresponds to the Tetrahedric pentagondodecahedric Crystal Class of the Isometric Crystal System.
When you came from the document treating of the Promorphology of Crystals, and when you want to go back to it, click HERE, or click the BACK button of your browser.
To proceed further with the systematic Promorphology, scroll the main frame further down.
This website consists of two Main Parts. Presently you are in an INFRAME of the second Part. When you cannot see the main document (containing this inframe) click on the next link and you will get to the opening page of the second Part. You will see a table of contents (set as links) in a left frame, and if not, you will see it when scrolling down that page. If you then click on Anaxonia, Homaxonia, Polyaxonia, and scroll all the way down you will be on the same site location as where you presently are, but now you will be in the main document (containing this inframe).
back to retrospect and continuation page