Brachiospongia - http://www.paleoportal.org/index.php?globalnav=fossil_gallery§ionnav=detail&submission_id=791&taxon_id=66&state_id=&period_id=&assemblage_id=&last_section=search
Photograph of this fossil sponge from the Ordovician in Kentucky. |
Choia utahensis - http://www.paleoportal.org/index.php?globalnav=fossil_gallery§ionnav=detail&submission_id=1405&taxon_id=66&state_id=&period_id=&assemblage_id=&last_section=search
Fossil sponges from the Cambrian in Utah showing the spicules of which the skeleton is composed. |
Cretaceous Sponges - http://www.cretaceous.de
Documentation and systematic description of fossil Cretaceous sponges (porifera) from the Campanian of Misburg and Höver, Germany. |
Pemmatites sp. - http://www.lakeneosho.org/Russia/Page20.html
Photographs of several complete fossil sponges. |
Raphidonema sp. - http://www.soton.ac.uk/~bam2/col-index/fossi-lindex/Sponges/pages/Raphidonema.htm
Photographs of fossil sponges from the Cretaceous. |
Siphonia - http://www.cretaceous.de/Siphonia.html
Photographs and information on Siphonia subglobosa and Siphonia tubulosa and some photomicrographs showing typical tetraclones and one dermal dichotriaene of Siphonia tubulosa. |
Siphonia kaeregi - http://www.ukfossils.co.uk/Recentfinds/viewimage.asp?cat=Photos&imageid=98
Photograph of a nice specimen of this tulip-shaped sponge. |
Sponge Reefs on the Continental Shelf - http://www.pgc.nrcan.gc.ca/marine/9901_home.htm
Canadian Geological Survey program to study hexactinellid reefs. |
Uphantaenia chemungensis - http://www.paleoportal.org/index.php?globalnav=fossil_gallery§ionnav=detail&submission_id=1362&taxon_id=66&state_id=&period_id=&assemblage_id=&last_section=search
Image of part of a sponge from the Devonian in New York. |