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Description of Alveolinidae ( Inglês )

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Miliolinid foraminifera, test free, large, subcylindrical to cigar-shaped, coiled about elongate axis; numerous adult planispiral chambers are divided by secondary partitions into one or more layers of chamberlets that parallel the direction of coiling; stenohaline, common in coral reef.
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Alveolinidae ( Inglês )

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Alveolinidae is a family of spheroidal to fusiform milioline foraminifera with multiple apertures and complex interiors in which chambers are subdivided into chamberlets and subfloors interconnected by passageways. As with all Miliolina, the test wall in alveolinids is porcellaneous and imperforate. In living individuals the pseudopodia emerge through the multiple apertures that line the apertural or leading face of the test.

Alveolina Cross-section

Alveolinids first appeared near the beginning of the Late Cretaceous, about 100 million years ago, some 150 million years after the superficially similar fusulinids became extinct at the end of the Permian.

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.

References

  • Alfred R. Loeblich Jr and Helen Tappan, 1964, Treatise on Invertebrate Paleontology, Part C, Protista 2; Geological Society of America and University of Kansas Press.
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Alveolinidae: Brief Summary ( Inglês )

fornecido por wikipedia EN

Alveolinidae is a family of spheroidal to fusiform milioline foraminifera with multiple apertures and complex interiors in which chambers are subdivided into chamberlets and subfloors interconnected by passageways. As with all Miliolina, the test wall in alveolinids is porcellaneous and imperforate. In living individuals the pseudopodia emerge through the multiple apertures that line the apertural or leading face of the test.

Alveolina Cross-section

Alveolinids first appeared near the beginning of the Late Cretaceous, about 100 million years ago, some 150 million years after the superficially similar fusulinids became extinct at the end of the Permian.

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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Alveolinidae ( Espanhol; Castelhano )

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Alveolinidae es una familia de foraminíferos bentónicos de la superfamilia Alveolinoidea, del suborden Miliolina[1]​ y del orden Miliolida.[2]​ Su rango cronoestratigráfico abarca desde el Aptiense (Cretácico inferior) hasta la Actualidad.

Clasificación

Alveolinidae incluye a los siguientes géneros:

Otros géneros considerados en Alveolinidae son:

Bibliografía

  1. Loeblich, A.R., Jr. y Tappan, H. (1987). Foraminiferal genera and their classification. Van Nostrand Reinhold Company (ed.), 2 vol., 1-970, 1-212 + 847 láminas.
  2. Loeblich, A.R., Jr. y Tappan, H. (1992). Present Status of Foraminiferal Classification. Studies in Benthic Foraminifera en Benthos'90, Sendai (1990), Tokai University Press, 93-102.
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Alveolinidae: Brief Summary ( Espanhol; Castelhano )

fornecido por wikipedia ES

Alveolinidae es una familia de foraminíferos bentónicos de la superfamilia Alveolinoidea, del suborden Miliolina​ y del orden Miliolida.​ Su rango cronoestratigráfico abarca desde el Aptiense (Cretácico inferior) hasta la Actualidad.

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wikipedia ES