Английская Википедия:Clavulinopsis (foram)

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Версия от 14:13, 19 февраля 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Short description|Extinct genus of single-celled organisms}} {{Italic title}} {{Taxobox | name = ''Clavulinopsis'' | fossil_range = Late Cret (Camp - Maastr) | domain = Eukaryota | unranked_regnum = SAR | unranked_subregnum = Rhizaria | superphylum = Retaria | phylum = Foraminifera | classis = Globoth...»)
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Шаблон:Short description Шаблон:Italic title Шаблон:Taxobox

Clavulinopsis is a genus of foraminifera from the Upper Cretaceous of the United States (Texas, Arkansas), included in the Textulariida. The type species is Clavulinopsis hofkeri Banner and Desai, 1985.

Clavulinopsis has a free aggulinated test with a considerable calcareous groundmass. The early stage is triserial, later abruptly becoming uniserial; cross section triangular. Sutures are slightly depressed, horizontal to slightly arched at the center of the flattened sides. Lateral walls are filled with fine micro-tubular cavities (term: canaliculate) that open into the chamber interiors, but are sealed externally by a finely agglutinated outer layer. Septa are solid, without micro-tubular cavities. The aperture is cribrate, with irregular pores at the end of a slightly produced neck.

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