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  1. By: Richiardi, Sebastiano,
    Publication info: Bologna, Fava e Garagnani, 1869
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Cnidaria  Pennatulidae  Sea pens  
  2. By: Gray, John Edward, - British Museum (Natural History). Department of Zoology.
    Publication info: London, Printed by order of the Trustees [by Taylor and Francis], 1870
    Holding Institution: Multiple institutions
    Subjects: Sea pens  
    BHL Collections: Natural History Museum (London) Publications
  3. By: Kükenthal, W. G. (Willy Georg),
    Publication info: Berlin, R. Friedländer und Sohn, 1915
    Holding Institution: MBLWHOI Library
    Subjects: Sea pens  
  1. By: Williams, Gary C.,
    Type: Article
    In: ZooKeys
    Volume: 546
    Date: 2015
    Page Range: 39-50
    Publication Info: Pensoft Publishers 2015
    Subjects: Gulf of Guinea  key to the virgulariid genera  New genus and species  Nigeria  Pennatulacea  Sea pens  Virgulariidae  West Africa  
  2. By: Williams, Gary C.,
    Type: Article
    In: ZooKeys
    Volume: 1019
    Date: 2021
    Page Range: 1--14
    Publication Info: Pensoft Publishers 2021
    Subjects: Deep-sea pennatulaceans  key to chunellid species  Porcupinella tasmanica sp. nov  Sea pens  systematics  worldwide distribution