1995 - present
The Museum reimagined its fossil halls in the 1990s. Chronologically arranged exhibits were updated to reflect evolutionary relationships. The Halls of Saurischian and Ornithischian Dinosaurs, the Lila Acheson Wallace Wing of Mammals and Their Extinct Relatives, which includes the Hall of Primitive Mammals and the Paul and Irma Milstein Hall of Advanced Mammals, the Hall of Vertebrates Origins, and the Miriam and Ira D. Wallach Orientation Center were the result of this rearrangement in exhibition (4, 1994/95, p. 5).
The Hall of Ornithischian Dinosaurs features mounts of Triceratops, Stegosaurus, the duck-billed Anatotitan dinosaurs, Corythosaurus, and the dinosaur mummy (1). Exhibits explore two evolutionary branches within the Ornithischian group: the genasaurs, which are defined by the development of inset tooth rows that form cheeks, and the cerapods, identified by an uneven covering of tooth enamel (1). In 2007 the new Dinosaurs Halls were renamed as the David H. Koch Dinosaur Wing in honor of Museum Trustee David H. Koch (4, 2007/08, p. 4).
Information for the hall appears in the following Museum publications:
American Museum of Natural History Annual Reports for years 1994-1996 (page 5); 2007-2008 (page 4)
American Museum of Natural History Original Guides for years 1993 (page 50); 2001 (Table of Contents, pages 16-17, 63)
American Museum of Natural History Floor Plan, Summer 2012
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