Archaeornithipus

Archaeornithipus
Trace fossil classification
Ichnogenus:	†Archaeornithipus; Fuentes Vidarte, 1996

Archaeornithipus was a genus of large bird ichnogenus discovered in Spain. The tracks date back to the Berriasian stage of the Cretaceous, making them among the oldest bird trace fossils in the world.[1]

Footnotes

Lockley, M.G.; Janke, P.; Theisen, L. (2001-01-01). "Bird Tracks". In Tanke, Darren H.; Carpenter, Kenneth; Skrepnick, Michael William (eds.). Mesozoic Vertebrate Life. Indiana University Press. p. 447. ISBN 9780253339072.

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[lakota-tracks-bird-447-1] Lockley, M.G.; Janke, P.; Theisen, L. (2001-01-01). "Bird Tracks". In Tanke, Darren H.; Carpenter, Kenneth; Skrepnick, Michael William (eds.). Mesozoic Vertebrate Life. Indiana University Press. p. 447. ISBN 9780253339072.