A virtual museum of crinoids from all over the world
Hess (1999): Uintacrinus Beds of the Upper Cretaceous Niobrara Formation, Kansas, USA (download)
Notes on Uintacrinus socialis by Mike Everhart
Jäger (1980): Die Seelilie Marsupites testudinarius (download)
Kühndahl (2010): Über Bourgueticrinus in der Lägersdorfer Schreibkreide (download)
Rasmussen (1961): A monograph on the Cretaceous Crinoidea
British Chalk Crinoids by Robert Randell