Cyrtina hamiltonensis (Hall) and a new species of this brachiopod genus from New York.

Lignende værker

• Leiopteria Rafinesquid Hall and a new species of the genus from the Thedford-Arkona region of Southwestern Ontario
  af: Ehlers, George M.
  Udgivet: (1959)
• A new Genus and species of Ostracod from the middle devonian Ludlowville formation in western New York.
  af: Kesling, Robert V.
  Udgivet: (1957)
• A new Genus and four new species of fossil Diptera from Montana and Colorado.
  af: HULL, Frank M.
  Udgivet: (1960)
• Four new Species of rugose corals of the middle devonian genus Eridophyllum, from New York, Michigan, and Ohio.
  af: Stumm, Erwin Charles
  Udgivet: (1954)
• Pycnaspis splendens, new genus, new species, a new ostracoderm from the upper ordovician of North America.
  af: Oervig, Tor
  Udgivet: (1958)