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n.1.(Zool.) A pennatula.
References in classic literature ?
Bahia Blanca -- Geology -- Numerous gigantic Quadrupeds -- Recent Extinction -- Longevity of species -- Large Animals do not require a luxuriant vegetation -- Southern Africa -- Siberian Fossils -- Two Species of Ostrich -- Habits of Oven-bird -- Armadilloes -- Venomous Snake, Toad, Lizard -- Hybernation of Animal -- Habits of Sea-Pen -- Indian Wars and Massacres -- Arrow-head, antiquarian Relic.
The evolution of fibrillar collagens: a sea-pen collagen shares common features with vertebrate type V collagen.
The "creatures" superficially resemble sea-pen corals but, on closer inspection, are unlike any animals that are alive today.