Cretaceous
British Chalk Chondrichthyes, by Robert Randell: http://www.chalk.discoveringfossils.co.uk/
Fossils of the Gault Clay and Folkestone Beds (Albian) in the county of Kent, south-east England. A very interesting sharks and rays section!
http://www.gaultammonite.co.uk/
 
Maastrichtian Sharks and Rays from Belgium and the Netherlands:
......John Bastiaansen: http://maastrichtiansharks.atwebpages.com/
 
Shark teeth from Maastrichtian and Danian deposits in Stevns Klint, Denmark:
http://www.geolsba.dk/hajer-Stevns2/stevns-2/hajer/haj-start.html
 
 
Tertiary
The Early Oligocene of Espenhain, by Marco Kannenberg
The Late Oligocene (Chattian) of Sternberg, by Marco Kannenberg
 
Lower Eocene fossils of the London Clay from the North coastal section of the Isle of Sheppey, Kent, UK. A good sharks and rays section!
http://www.sheppeyfossils.com/
 
Chondrichthyan teeth from the Paleogene of Kiev, Ukraine, by Stanislav Dobrovolskiy: https://sites.google.com/site/kyivzub/Home
 
Literature & institutions...
Acta Palaeontologica Polonica:
http://app.pan.pl/
Geologos:
http://www.geologos.com.pl/
 
Acta Geologica Polonica:
http://www.geo.uw.edu.pl/agp/
...AGP, 2008, Volume 58(2)
 
Geologica Belgica:
http://popups.ulg.ac.be/Geol.htm
Revista Mexicana de Ciencias Geológicas:
http://satori.geociencias.unam.mx/home.html
 
Netherlands Journal of Geosciences / Geologie en Mijnbouw:
http://www.njgonline.nl/
 
Geodiversitas (French National Museum of Natural History):
1997-2004; 2004-today
 
Birkbeck ePrints; an open access repository of the Birkbeck College of the University of London: http://eprints.bbk.ac.uk/ - http://eprints.bbk.ac.uk/perl/search/simple
Royal Belgian Institute of Natural Sciences:
http://www.naturalsciences.be/
List of publications: http://www.naturalsciences.be/common/pdf/science/publications/Cata.pdf
 
Dutch National Museum of Natural History:
http://www.naturalis.nl
Teylers Museum:
http://www.teylersmuseum.nl/
 
Societies & Associations in Geology and Palaeontology...
Belgische Vereniging voor Paleontologie - Belgian Palaeontological Society (BVP): http://www.paleontologie.be/
The Tertiary Research Group (UK): http://www.trg.org/
Palaeo-Publishing & -Library: http://www.palaeontos.be/
European Caenozoic Contact Group: http://members.chello.be/cr42644/Caenozoic_fossils/index/index.html
The International Commission on Stratigraphy (ICS): http://www.stratigraphy.org/
The International Commission on Zoological Nomenclature (ICZN): http://www.iczn.org/