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