Trilobites

• The Invertebrate Paleontology division at the Oklahoma Museum of Natural History now has a searchable database on-line of our Type (primary and secondary) and figured (published, no unpubl. thesis specimens) trilobites

Chelicerata

• Arachnida Catalogue, species level files available (02. Feb. 04)
• Illustrated Key to Middle European Spiders
• Arachnology Homepage
• Arachnological societies and publications
• Review of Lyme borreliosis (Lyme disease).
• British Arachnological Society's web page
• "Victorian Spiders" page (Southern Australian)
• Arachnid order Solifugae, and Bibliography
• Website of Ed Nieuwenhuys with Spider Pictures
• Photographs of scorpions
• Pantopoda-Homepage of Dr. Franz Krapp

Crustacea

Regional Lists

• NEW Arctic Ostracode Database
• Antartic Amphipoda
• North East Atlantic Crustacea
• European Register of Marine Species
• Isopoda
• Checklist of the amphipods of the Southern Ocean
• French database
  
  General
  
  
• Orca Film über Urzeitkrebse
• Amphipoda Homepage
• North East Atlantic Taxa
• Crustacea Search Engine
• "all known copepod literature from 1600 A.D. to the present"
• List of almost all carcinologist of Latin America
• Crustacea from the Upper Cambrian Orsten
• Crustacean Biodiversity Survey
• Crustacea in "Tree of Life" Project
• http://www.nmh.si.edu/cgi-bin/wdb/cope_taxa/form
• Crustacea.net

  Entomostraca

• Ellis and Messina Catalogue of Ostracoda by the American Museum of Natural History, Micropaleontology Press
• Ostracoda Site of the School of Earth and Enivironmental Sciences, University of Greenwich, http://www.gre.ac.uk/directory/earthsci/ostracod/Index.htm
• International Research Group on Ostracoda website
• Issue No. 15 of Cypris for 1997
• Issue No. 16 of Cypris for 1998
• (larger) Branchiopoda in english (large branchiopods), in deutsch (Urzeitkrebse), and in español (branquiopodos)
• Web Pages on Copepods from Giuseppe L. Pesce: http://www.glpesce.net/fauna.html (mirror: http://members.tripod.om/~gpesce/fauna.html ) - http://www.glpesce.net/cyclopid.html - http://www.glpesce.net/arpact.html - http://www.glpesce.net/copepod.html
• URLs with information about Copepoda
• Biology of Copepods – website by Thorsten D. Kuennemann from the University of Oldenburg, DE

  Malacostraca

• NEW Fiddler crab website
• International Association of Astacology website: http://www.uku.fi/english/organizations/IAA/toc.html which contains interesting information on crayfish and further links to relevant pages.
  
• Faculty and Zoological Museum Journal: Contributions to Zoology Online
• A list of the Decapoda and Stomatopoda of the French Polynesian Islands (Marquesas, Tuamotu, Society, Gambier and Australs Islands), including more than 750 records and numerous photographs
• directory of almost all the latin american carcinologist (and others who also work in LAmerica). To be included, please send an email with your affiliation, address, etc to: centolla@tierradelfuego.ml.org
• entry to informations on Crustacea of the BIOSIS info server (internet resource guide to zoology)
• Website about amphipod related research.
• Some Interesting Crustacean, Paleo, and Phylogeny sites.
• The Crustacean Biodiversity Survey - A site of general interest that includes a searchable, additive, database. Also current home of the TCS home page.
• http://www.cofc.edu/~bruscar/whatisopod/whatareisopods.htm and Websites about Isopods.
• For those of you who have an interest in phreatoicidean isopods (that's everyone, right?), I have just put up an illustrated key and the files for a DELTA IntKey interactive key. If you want to give try them, aim your www browser at http://www-personal.usyd.edu.au/~buz/phreamenu.html and click at the bottom of the list Traditional and Interactive Key to most Genera. 
• Tanaidacea homepage

  Isopoda

• National Museum of Natural History's Gopher Server. World list of Terrestrial Isopoda, compiled by Brian Kensley and Marilyn Schotte.
• Isopods (homepage by George Wilson with interesting links)
• World list of marine and freshwater Isopoda