dcsimg

Description of Valvulinidae

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Test trochospiral to triserial in early stage, later uniserial; aperture interiomarginal in early stage, later terminal and rounded, with valvular tooth or flap; wall canaliculate.
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Valvulinidae

provided by wikipedia EN

The Valvulinidae is a family of Paleocene to recent benthic textulariid Foraminifera characterized by trochospiral tests in the early stage which may become uniserial in the later. Walls are of cemented agglutinated material and have cavities created by micro-tubules, i.e. are canaliculate. Apertures have a valvular tooth or flap, at least in early stage, but may become multiple and areal in the later stage.

Three subfamilies have been defined, the Valvulininae, Siphobigenerininae, and Tritaxilininae.

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Valvulinidae: Brief Summary

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The Valvulinidae is a family of Paleocene to recent benthic textulariid Foraminifera characterized by trochospiral tests in the early stage which may become uniserial in the later. Walls are of cemented agglutinated material and have cavities created by micro-tubules, i.e. are canaliculate. Apertures have a valvular tooth or flap, at least in early stage, but may become multiple and areal in the later stage.

Three subfamilies have been defined, the Valvulininae, Siphobigenerininae, and Tritaxilininae.

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