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Wooster’s Fossils of the Week: A calcareous sponge with a crinoid holdfast (Matmor Formation, Middle Jurassic, Israel)

Source info:

Author:
Date: 2012-04-08 07:58:50
Blog: Wooster Geologists
URL: http://woostergeologists.scotblogs.wooster.edu/2012/04/08/woosters-fossil-of-the-week-a-calcareous-sponge-with-a-crinoid-holdfast-matmor-formation-middle-jurassic-israel/

Summary:

The Class Calcarea of the Phylum Porifera is a group of sponges characterized by spicular skeletons made of calcium carbonate (calcite in this case). The spicules (small elements of the skeleton) are often fused together, causing the sponges to look a bit like corals or bryozoans. They are among the most common fossils in the [...]

Content analysis:

Stratigraphic context:

Recognized stratigraphic terms [n]:Middle Jurassic [1]
Agenames chronostratigraphy [rating]:Middle Jurassic [0.1]
Jurassic [0.1]
Mesozoic [0.1]
Phanerozoic [0.1]

Geographic context:

LocationCountryLatitudeLongitude
MatmorIL31.750534.6782
IsraelIL31.389335.3612

Keywords:

bryozoans, calcareous sponge, calcite, calcium carbonate, Class Calcarea, common fossils, corals, crinoid holdfast, Matmor Formation, Middle Jurassic, Phylum Porifera, small elements, spicular skeletons, spicules, sponges, Uncategorized

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