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Description of Spumellaria

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Polycystines, spherical body plan with actinopodia radiating uniformly from all over the surface of the central capsule.
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Spumellaria

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Spumellaria is an order of radiolarians in the class Polycystinea. They are ameboid protists appearing in abundance in the world's oceans, possessing a radially-symmetrical silica (opal) skeleton that has ensured their preservation in fossil records. They belong among the oldest Polycystine organisms, dating back to the lower Cambrian (ca. 515 million years). Historically, many concentric radiolarians have been included in the Spumellaria order based on the absence of the initial spicular system, an early-develop structure that, by its lacking, sets them apart from Entactinaria despite their similar morphology.[2] Living exemplars of the order feed by catching prey, such as copepod nauplii or tintinnids, on the adhesive ends of their pseudopodia extending radially from their skeleton; however, some have been observed as mixotrophs living in symbiosis with various photosynthetic algal organisms such as dinoflagellates, cyanobacteria, prasinophytes or haptophytes, which may cause their distribution to center in the greatest abundance and diversity within trophical waters.[2]

Families

In addition, several taxa in this order are still considered incertae sedis.

Gallery

References

  1. ^ WoRMS (2019). Spumellaria. Accessed at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=345835 on 2019-01-08
  2. ^ a b [1], Mendez Sandin. Diversity and Evolution of Nassellaria and Spumellaria (Radiolaria). Protistology. Sorbonne Université, 2019. English. Accessed at: https://tel.archives-ouvertes.fr/tel-03137926/file/MENDEZ_SANDIN_Miguel_2019.pdf on 2022-10-18

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Spumellaria: Brief Summary

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Spumellaria is an order of radiolarians in the class Polycystinea. They are ameboid protists appearing in abundance in the world's oceans, possessing a radially-symmetrical silica (opal) skeleton that has ensured their preservation in fossil records. They belong among the oldest Polycystine organisms, dating back to the lower Cambrian (ca. 515 million years). Historically, many concentric radiolarians have been included in the Spumellaria order based on the absence of the initial spicular system, an early-develop structure that, by its lacking, sets them apart from Entactinaria despite their similar morphology. Living exemplars of the order feed by catching prey, such as copepod nauplii or tintinnids, on the adhesive ends of their pseudopodia extending radially from their skeleton; however, some have been observed as mixotrophs living in symbiosis with various photosynthetic algal organisms such as dinoflagellates, cyanobacteria, prasinophytes or haptophytes, which may cause their distribution to center in the greatest abundance and diversity within trophical waters.

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Spumellaria ( Spanish; Castilian )

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Spumellaria son un grupo de radiozoos que pueden ser unicelulares solitarios o coloniales y son de hábitat marino. La cápsula central, que suele ser esférica, presenta pequeños poros circulares distribuidos uniformemente por la pared capsular. Algunos miembros carecen de esqueleto pero otros presentan un esqueleto con simetría radial, esto es, de forma esférica o derivada de esta, como espirales, discoidales, triaxónicos, cuadrangulares, etc. Es frecuente que el esqueleto esté formado por varias capas concéntricas, unidas por barras radiales.[2]

 src=
Esqueleto de Hexastylus

Referencias

  1. Traits (2011). Spumellaria. Accessed through: World Register of Marine Species at http://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=345835 on 2017-03-31
  2. Adl, S.M. et al. (2012). The revised classification of eukaryotes. Journal of Eukaryotic Microbiology, 59(5), 429-514
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Spumellaria: Brief Summary ( Spanish; Castilian )

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Spumellaria son un grupo de radiozoos que pueden ser unicelulares solitarios o coloniales y son de hábitat marino. La cápsula central, que suele ser esférica, presenta pequeños poros circulares distribuidos uniformemente por la pared capsular. Algunos miembros carecen de esqueleto pero otros presentan un esqueleto con simetría radial, esto es, de forma esférica o derivada de esta, como espirales, discoidales, triaxónicos, cuadrangulares, etc. Es frecuente que el esqueleto esté formado por varias capas concéntricas, unidas por barras radiales.​

 src= Esqueleto de Hexastylus
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Spumellaria ( Basque )

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Spumellaria ordena erradiolario bakarti eta batzuetan kolonialez osatua dago. Ez dute hasierako espikularik. Gainera honako ezaugarriak dituzte:

  • Kapsula zentral sinplea dute, zulatua poro oso txikiekin.
  • Simetria erradiala dute.
  • Eskeletoak ez dira biribilak, baizik eta elipsoideak, diskoidalak edo lentikularrak.
  • Oskolak belaki itxurakoak dira, kontzentrikoki, espiralean edo irregularki bilduak.

Permiarretik gaur egun arte.

Familiak

Erreferentziak

  • MICROPALEONTOLOGIA. Molina, Eustoquio - 2º ed. Zaragoza: Prensas Universitarias de Zaragoza, 2004.

Ikus, gainera

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Spumellaria: Brief Summary ( Basque )

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Spumellaria ordena erradiolario bakarti eta batzuetan kolonialez osatua dago. Ez dute hasierako espikularik. Gainera honako ezaugarriak dituzte:

Kapsula zentral sinplea dute, zulatua poro oso txikiekin. Simetria erradiala dute. Eskeletoak ez dira biribilak, baizik eta elipsoideak, diskoidalak edo lentikularrak. Oskolak belaki itxurakoak dira, kontzentrikoki, espiralean edo irregularki bilduak.

Permiarretik gaur egun arte.

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Spumellaria ( French )

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Les Spumellaria sont un ordre de radiolaires de la classe des Polycystinea.

Liste des familles

Selon IRMNG (21 mars 2021)[2] :

Selon World Register of Marine Species (21 mars 2021)[3] :

Notes et références

Références biologiques

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Spumellaria: Brief Summary ( French )

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Les Spumellaria sont un ordre de radiolaires de la classe des Polycystinea.

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Spumellaria ( Italian )

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Spumellaria Ehrenberg, 1875 è un ordine di protisti radiolari caratterizzato da una struttura scheletrica reticolata (costituita da vari elementi allungati, le spicole) di forma sferoidale, ellissoidale o lenticolare.

Tassonomia

Comprende le seguenti famiglie:[1]

Note

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Spumellaria: Brief Summary ( Italian )

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Spumellaria Ehrenberg, 1875 è un ordine di protisti radiolari caratterizzato da una struttura scheletrica reticolata (costituita da vari elementi allungati, le spicole) di forma sferoidale, ellissoidale o lenticolare.

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Spumellaria ( Portuguese )

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Spumellaria são um grupo de radiozoos que podem ser unicelulares solitários ou coloniais e são de habitate marinho. A cápsula central, que costuma ser esférica, apresenta pequenos poros circulares distribuídos uniformemente pela parede capsular. Alguns membros carecem de esqueleto mas outros apresentam um esqueleto com simetria radial, isto é, de forma esférica ou derivada desta, como torques, discoidales, triaxónicos, quadrangulares, etc. É frequente que o esqueleto esteja formado por várias capas concêntricas, unidas por barras radiais.[1]

Notas

  • Este artigo foi inicialmente traduzido, total ou parcialmente, do artigo da Wikipédia em castelhano, cujo título é «Spumellaria», especificamente .

Referências

  1. Adl, S.M. et al. (2012). The revised classification of eukaryotes. Journal of Eukaryotic Microbiology, 59(5), 429-514
 title=
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Spumellaria: Brief Summary ( Portuguese )

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Spumellaria são um grupo de radiozoos que podem ser unicelulares solitários ou coloniais e são de habitate marinho. A cápsula central, que costuma ser esférica, apresenta pequenos poros circulares distribuídos uniformemente pela parede capsular. Alguns membros carecem de esqueleto mas outros apresentam um esqueleto com simetria radial, isto é, de forma esférica ou derivada desta, como torques, discoidales, triaxónicos, quadrangulares, etc. É frequente que o esqueleto esteja formado por várias capas concêntricas, unidas por barras radiais.

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