Die Spirillinida sind eine Ordnung gehäusetragender, im Meer lebender Einzeller aus der Gruppe der Foraminiferen.
Die Arten der Ordnung sezernieren ihre optisch aus einzelnen, wenigen oder einem Mosaik aus Kristallen zusammengesetzten Gehäuse aus Niedrig-Magnesium-Kalzit (Magnesium). Die Gehäuse sind perforat oder imperforat, planispiral bis hoch trochospiral und mehrkammerig. Die erste Kammer, der Proloculus, ist jeweils kugelförmig, die zweite röhrenförmig und entweder un- oder wenigkammerig. Die einzelnen Kammern sind gelegentlich weiter unterteilt.
Die Ordnung ist seit der oberen Trias durch Fossilien belegt. Sie enthält zwei Familien, eine Überfamilie fehlt jedoch.
Die Spirillinida sind eine Ordnung gehäusetragender, im Meer lebender Einzeller aus der Gruppe der Foraminiferen.
The Spirillinida are an order of foraminifera in which the test, or shell, primitively consists of an enrolled open tube, coming after the proloculus, wound planospirally or conically, commonly composed of an optically single crystal of calcite. The aperture is a simple opening at the end of the tube. Advanced forms with more than one chamber may consist of a few crystals, or rarely, a mosaic of crystals of calcite.
The Spirillinida were separated from the Rotaliida where they had been included as the Spirillinacea. However, not only is the spirillinid test rather distinct from typical rotaliid tests commonly composed of radially laminated calcite, but so are the protists distinct. The gametes produced by spirillinids during sexual reproduction are amoeboid in contrast to the biflagellate gametes produced by most other Foraminifera included rotaliids.
Two living families are recognised. No superfamily has been established. The families are
The Spirillinida are an order of foraminifera in which the test, or shell, primitively consists of an enrolled open tube, coming after the proloculus, wound planospirally or conically, commonly composed of an optically single crystal of calcite. The aperture is a simple opening at the end of the tube. Advanced forms with more than one chamber may consist of a few crystals, or rarely, a mosaic of crystals of calcite.
The Spirillinida were separated from the Rotaliida where they had been included as the Spirillinacea. However, not only is the spirillinid test rather distinct from typical rotaliid tests commonly composed of radially laminated calcite, but so are the protists distinct. The gametes produced by spirillinids during sexual reproduction are amoeboid in contrast to the biflagellate gametes produced by most other Foraminifera included rotaliids.
Two living families are recognised. No superfamily has been established. The families are
Spirillinidae: The test consists of the single, coiled, tubular chamber, after the proluculus, composed of an optically single crystal of calcite. Example Spirillina Patellinidae: The test is conical, multichambered, initial chamber after poroluclus tubular, two chambers in each later whorl. Example PatellinaSpirillinida es un orden de foraminíferos (clase Foraminiferea, o Foraminifera),[1] tradicionalmente considerado suborden Spirillinina del orden Foraminiferida.[2] Su rango cronoestratigráfico abarca desde el Triásico superior hasta la Actualidad.
Son un grupo de foraminíferos bentónicos que presentan una concha calcárea cuya pared, formada por acreción marginal, consiste en un único cristal o de pocos cristales en mosaico. Sus conchas o no están septadas o presentan pocas cámaras por vuelta. Su enrollamiento es planiespiralado a trocoespiralado alto. Consisten en un prolóculo seguido de una segunda cámara tubular enrollada y no dividida, o de varias cámaras por vuelta que pueden estar divididas. Pueden presentar pseudoporos o microporos rellenos de materia orgánica y cerrados por placas perforadas.[3]
Textulariina incluye a las siguientes familias:
Datos: Q2311052
Especies: Spirillinida
Spirillinida es un orden de foraminíferos (clase Foraminiferea, o Foraminifera), tradicionalmente considerado suborden Spirillinina del orden Foraminiferida. Su rango cronoestratigráfico abarca desde el Triásico superior hasta la Actualidad.
Les Spirillinida sont un ordre de foraminifères de la classe des Tubothalamea.
Selon World Register of Marine Species (2 septembre 2016)[1] :
Les Spirillinida sont un ordre de foraminifères de la classe des Tubothalamea.
