proloculus sentence in Hindi
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- Tests are non septate and consist of a single chamber following the proloculus.
- The proloculus is large, followed by seven to nine gradually enlarging volutions, coiled around a straight to irregular axis.
- Tests of the Spirillinata consist typically of a proloculus followed by an undivided planospirally or trochospirally wound tubular chamber such that the test is either planar or conical.
- Ontogeny goes through an early quinqueloculine stage immediately following the proloculus, followed in sequence by triloculine and biloculine stages and finally to an adult stage with completely enveloping chambes.
- Smaller megalospheric tests may be fan-shaped or kidney-shaped to discoidal with breadths to slightly over 2 mm and a constant thickness equal to that of the proloculus.
- The included genera are characterized by asymmetrical, semi-involute to partially evolute, aragonitic tests consisting of an undivided planispiral or trochospiral tubular chamber wound about the proloculus, or initial chamber.
- Hemigordiopsids are characterized by tests in which the proloculus, or first chamber, is followed by an undivided tubular second chamber that is streptospirally coiled, ( like a ball of string ), at least in early stage, later may be planispiral, involute, or evolute.
- The "'Hirsutospirellidae "', established for the Upper Triassic genus " Hirsutospirella ", are a family of Foraminifera within the Involutinida that produced calcareous tests with a proloculus followed by an undivided trochospirally enrolled tubular second chamber, in which the spiral side has prominent spinelike protrusions and umbilical side has a shallow umbilical filling.
- Irregular coiling is found in the first volutions in the microspheric forms of most genera, indicating a close relationship with the Miliolidae . " Alveolinella " is an exception as the proloculus in the microspheric form is perforate and the first volutions are peneroplid in character, suggesting it, " Alveolinella ", may have a different origin than the other alveolinids.
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