Sponges Invertebrates Paleontology Earth Sciences

Photographs and information on Siphonia subglobosa and Siphonia tubulosa and some photomicrographs showing typical tetraclones and one dermal dichotriaene of Siphonia tubulosa.

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• Sponge Reefs on the Continental Shelf - Canadian Geological Survey program to study hexactinellid reefs.
• Raphidonema sp. - Photographs of fossil sponges from the Cretaceous.
• Siphonia - Photographs and information on Siphonia subglobosa and Siphonia tubulosa and some photomicrographs showing typical tetraclones and one dermal dichotriaene of Siphonia tubulosa.
• Siphonia kaeregi - Photograph of a nice specimen of this tulip-shaped sponge.
• Uphantaenia chemungensis - Image of part of a sponge from the paleontology Devonian in paleontology New York.
• Pemmatites sp. - Photographs of several complete fossil sponges.
• Brachiospongia - Photograph of this fossil sponge from the Ordovician invertebrates in Kentucky.
• Choia utahensis - Fossil sponges from the Cambrian in Utah showing the spicules sponges of which the skeleton is composed.
• Cretaceous Sponges - Documentation and systematic description of fossil Cretaceous sponges (porifera) from invertebrates the Campanian of Misburg and Höver, Germany.

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