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Description: | Stomatoporoids, of which Stromatopora concentrica is an example, were common during the Devonian period. They were once thought to be related to corals, but are now recognised as being calcareous (made of calcium carbonate) sponges. Calcareous sponges similar to fossil stromatoporoids, are found in modern oceans today. However, true stromatoporoids are now extinct. They were usually mound-shaped or sheet-like, and were commonly found in reefs (an underwater ridge teeming with life, close to the coast). | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | fossils natural world | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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