The names Pterocoma or Antedon don't seem to be valid anymore.   References: G. Dietl and G. Schweigert. 2011. Im Reich der Meerengel. Der Nusplinger Plattenkalk und seine Fossilien. [W. Kiessling/M. Krause/M. Krause]
Class: Crinoidea Family: Antedonidae Solnhofen Formation Bavaria International Age: Tithonian Date Collected: 06/01/1985 Catalog #: TFF-oilshale-Ec672