nimet breadcrumb-navigoinnissa
Cassidulina is a genus of foraminifera described in the Treatise Part C. (Loeblich & Tappan, 1964), as having a free, lenticular test, with central boss of clear calcite on either side. Chambers are biserially arranged, enrolled planispirally with a subangular to keeled periphery. The wall is calcareous, hyaline (glassy), optically granular, perforate. The surface is smooth with a polished appearance. Sutures are radial to oblique, straight or curved. The aperture is a narrow arched slip at the base of the apertural face, partly closed by an apertural place. (Loeblich and Tappan 1988)
The taxonomy of Cassidulina is rather stable, and is included in the Cassidulinidae at least as far back as Cushman, 1950. Related genera include Cassidulinella, Favocassidulina, Globocassidulina, and Buriela. Cassidulina, itself, is cosmopolitan, with a stratigraphic range extending from the Upper Eocene to recent.
Geological Survey of Iran, (e-book) 2005. [1]
Cassidulina is a genus of foraminifera described in the Treatise Part C. (Loeblich & Tappan, 1964), as having a free, lenticular test, with central boss of clear calcite on either side. Chambers are biserially arranged, enrolled planispirally with a subangular to keeled periphery. The wall is calcareous, hyaline (glassy), optically granular, perforate. The surface is smooth with a polished appearance. Sutures are radial to oblique, straight or curved. The aperture is a narrow arched slip at the base of the apertural face, partly closed by an apertural place. (Loeblich and Tappan 1988)
The taxonomy of Cassidulina is rather stable, and is included in the Cassidulinidae at least as far back as Cushman, 1950. Related genera include Cassidulinella, Favocassidulina, Globocassidulina, and Buriela. Cassidulina, itself, is cosmopolitan, with a stratigraphic range extending from the Upper Eocene to recent.
Cassidulina es un género de foraminífero bentónico de la subfamilia Cassidulininae, de la familia Cassidulinidae, de la superfamilia Cassidulinoidea, del suborden Buliminina y del orden Buliminida.[1][2] Su especie tipo es Cassidulina laevigata. Su rango cronoestratigráfico abarca desde el Eoceno superior hasta la Actualidad.
Clasificaciones previas incluían Cassidulina en el suborden Rotaliina del orden Rotaliida.[3]
Se han descrito numerosas especies de Cassidulina. Entre las especies más interesantes o más conocidas destacan:[4][5]
Un listado completo de las especies descritas en el género Cassidulina puede verse en el siguiente anexo.
En Cassidulina se ha considerado el siguiente subgénero:
Datos: Q5049369
Especies: Cassidulina
Cassidulina es un género de foraminífero bentónico de la subfamilia Cassidulininae, de la familia Cassidulinidae, de la superfamilia Cassidulinoidea, del suborden Buliminina y del orden Buliminida. Su especie tipo es Cassidulina laevigata. Su rango cronoestratigráfico abarca desde el Eoceno superior hasta la Actualidad.
