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PORIFERA [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-03-03

English

Subject field(s)
  • Paleontology
DEF

An ancient Precambrian organism resembling sponges and corals and that built early limestone reefs.

CONT

Archaeocyathans are a short-lived, Early Paleozoic group of enigmatic fossils. The organisms were constructed as a set of two concentric cylinders connected by transverse septa. The cylindrical walls were imperforated. Archaeocyathans were apparently benthic, sessile, suspension feeders. Because of their ecological habitat and trophic habits, they have been compared frequently to the Porifera, but it is unknown if the two phyla are closely related.

OBS

archaeocyathan: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Paléontologie
DEF

Microorganisme marin fossile du précambrien.

CONT

Les archéocyathidés sont des parents éloignés des éponges et se rapprochent à la fois des éponges et des coraux. Comme les éponges, ils avaient des spores, mais leur structure générale était plus complexe. Leur extinction complète se produisit au Cambrien moyen et demeure mystérieuse. Leur place de bâtisseur de récif resta vacante durant des dizaines de millions d'années.

OBS

archéocyathidé : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 1

Record 2 1991-06-14

English

Subject field(s)
  • Reptiles and Amphibians
DEF

Any animal of the phylum Porifera, comprising the sponges

French

Domaine(s)
  • Reptiles et amphibiens
DEF

Embranchement constitué par les éponges

Spanish

Save record 2

Record 3 1977-08-15

English

Subject field(s)
  • Paleontology
OBS

[The flagellated chamber is] an outpouching of the wall of the central cavity in Porifera that is lined with choanocytes; connects with incurrent canals through prosophyles.

French

Domaine(s)
  • Paléontologie
OBS

[Le courant d'eau produit par les cils vibratiles d'un spongiaire] s'effectue des pores vers l'oscule et l'ensemble peut être interprété comme une vaste "corbeille vibratile" (...)

OBS

Au stade "Leucon" (...) chaque diverticule est divisé en diverticules de second ordre, les "corbeilles vibratiles", où se localisent les choanocytes.

Spanish

Save record 3

Record 4 1977-01-14

English

Subject field(s)
  • Paleontology
OBS

Solitary or colonial animals having cellular grade of construction, with body which bears many pores, canals, and chambers, but no mouth or internal organs; calcareous, siliceous, or horny skeletal support generally present.

French

Domaine(s)
  • Paléontologie
OBS

(...) leur squelette (...) est formé de spicules calcaires ou siliceux, isolés ou en réseau.

Spanish

Save record 4

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