Definition of Foremina. Meaning of Foremina. Synonyms of Foremina

Here you will find one or more explanations in English for the word Foremina. Also in the bottom left of the page several parts of wikipedia pages related to the word Foremina and, of course, Foremina synonyms and on the right images related to the word Foremina.

Definition of Foremina

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Meaning of Foremina from wikipedia

- siphuncle segments, which are generally tubular, are constricted at the septal foremina (the openings through with the siphuncular tissues p****). This feature...
- the venter; segments are short and not strongly contracted at the septal foremina, connecting rings are thickened and have enlarged bullettes. Ulrichoceras...
- convex margin. Siphuncle segments are strongly narrowed at the septal foremina, bullettes swollen, parietal and other internal deposits rarely preserved...
- typically tubular siphuncle segments that are rapidly contracted at the septal foremina. In defining the Sactorthceratidae, the second group with slightly expanded...
- with inflated bullettes. Parietal deposits grow forward from the septal foremina, commonly forming a continuous internal lining. Cameral deposits are common...
- expanded, increasing from diameters of around 3 to 4 mm at the septal foremina to a maximum width of around 12 to 14 mm. Septal necks are cyrtochoanitic...
- endosiphunclar deposits that grow forward and back from the region of the septal foremina. About 45 species have been described from North America, including Greenland...
- moderately thick with inflated bullettes grasping the previous septal foremina. Parietal deposits within the siphuncle from endocones in advanced genera...