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Open Directory - Science: Earth Sciences: Paleontology: Invertebrates: Sponges
Science: Biology: Flora and Fauna: Animalia: Porifera
- Photograph of this fossil sponge from the Ordovician in Kentucky.
- Fossil sponges from the Cambrian in Utah showing the spicules of which the skeleton is composed.
- Documentation and systematic description of fossil Cretaceous sponges (porifera) from the Campanian of Misburg and Höver, Germany.
- Photographs of several complete fossil sponges.
- Photographs and information on Siphonia subglobosa and Siphonia tubulosa and some photomicrographs showing typical tetraclones and one dermal dichotriaene of Siphonia tubulosa.
Sponge Reefs on the Continental Shelf
- Canadian Geological Survey program to study hexactinellid reefs.
- Image of part of a sponge from the Devonian in New York.
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