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Source: Zoonomen - Zoological Nomenclature Resource, 2010.05.27, website (version 27-May-10)

ITIS records citing this source
 
 Kingdom Animalia
  Prionopidae Swainson, 1824 -- valid
  Prionops Vieillot, 1816 -- valid
  Prionops alberti Schouteden, 1933 -- valid -- Yellow-crested Helmetshrike
  Prionops caniceps (Bonaparte, 1850) -- valid -- Red-billed Helmetshrike
  Prionops caniceps caniceps (Bonaparte, 1850) -- valid
  Prionops caniceps harterti (Neumann, 1908) -- valid
  Prionops gabela Rand, 1957 -- valid -- Gabela Helmetshrike
  Prionops plumatus (Shaw, 1809) -- valid -- White-crested Helmetshrike
  Prionops plumatus concinnatus Sundevall, 1850 -- valid
  Prionops plumatus cristatus Rüppell, 1836 -- valid
  Prionops plumatus plumatus (Shaw, 1809) -- valid
  Prionops plumatus poliocephalus (Stanley, 1814) -- valid
  Prionops plumatus vinaceigularis Richmond, 1897 -- valid
  Prionops poliolophus Fischer & Reichenow, 1884 -- valid -- Grey-crested Helmetshrike
  Prionops retzii Wahlberg, 1856 -- valid -- Retz's Helmetshrike
  Prionops retzii graculinus Cabanis, 1868 -- valid
  Prionops retzii nigricans (Neumann, 1899) -- valid
  Prionops retzii retzii Wahlberg, 1856 -- valid
  Prionops retzii tricolor G. R. Gray, 1864 -- valid
  Prionops rufiventris (Bonaparte, 1853) -- valid -- Rufous-bellied Helmetshrike
  Prionops rufiventris mentalis (Sharpe, 1884) -- valid
  Prionops rufiventris rufiventris (Bonaparte, 1853) -- valid
  Prionops scopifrons (W. Peters, 1854) -- valid -- Chestnut-fronted Helmetshrike
  Prionops scopifrons keniensis (Someren, 1923) -- valid
  Prionops scopifrons kirki (W. L. Sclater, 1924) -- valid
  Prionops scopifrons scopifrons (W. Peters, 1854) -- valid
   

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