Skip to main content
Select Source:

Stromatoporoidea

Stromatoporoidea Extinct group that has been attributed to the Hydrozoa, sponges (Porifera), foraminifera (Foraminiferida), Bryozoa, or algae, or regarded as a phylum with no modern representatives. Stromatoporoids are calcareous masses built up of horizontal layers (latilaminae) and vertical pillars. The calcareous skeleton is called the coenosteum. The upper surfaces show a pattern of polygonal markings and may have swellings (mammelons) and stellate grooves (astrorhizae). They are found in limestones of Cambrian to Cretaceous age, often forming reefs in Ordovician to Devonian times.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Stromatoporoidea." A Dictionary of Earth Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Stromatoporoidea." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stromatoporoidea

"Stromatoporoidea." A Dictionary of Earth Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stromatoporoidea

Stromatoporoidea

Stromatoporoidea An extinct group that has been attributed to the hydrozoans, sponges, foraminifera, bryozoans, algae, or regarded as a phylum with no modern representatives. Stromatoporoids are calcareous masses built up of horizontal laminae and vertical pillars. The upper surfaces show a pattern of polygonal markings and may have swellings and stellate grooves. They are found in limestones of Cambrian to Cretaceous age, often forming reefs in Ordovician to Devonian times.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Stromatoporoidea." A Dictionary of Zoology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Stromatoporoidea." A Dictionary of Zoology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stromatoporoidea-0

"Stromatoporoidea." A Dictionary of Zoology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/stromatoporoidea-0