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archaeornis

British  
/ ˌɑːkɪˈɔːnɪs /

noun

  1. an extinct primitive Jurassic bird, formerly placed in the genus Archaeornis but now thought to be a species of archaeopteryx

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of archaeornis

C19: New Latin, from archaeo- + Greek ornis bird