Jura iku périodhe utama sajeroning skala wektu géologi kang dumadi watara 199,6 ± 0,6 tekan 145,4 ± 4,0 yuta taun kapungkur, sawisé périodhe Trias lan ndhisiki périodhe Kapur. Lapisan batuan kang awèh ciri awal lan akir périodhe iki kaidhèntifikasi kanthi becik, nanging wektu pasé ora bisa dipesthèkaké watara 5 nganti 10 yuta taun. Jura wujud périodhe patengahan éra Mesozoikum, kang ditepungi uga minangka "Jaman Dinosaurus". Awal périodhe iki ditengeri kanthi prastawa curesé Trias-Jura.

Jeneng périodhe iki diwènèhaké déning Alexandre Brogniart dhedhasar akèhé watu kapur laut kang tinemu ing Pagunungan Jura, ing laladan patemon Jerman, Prancis, lan Switserlan.

Cathetan

Wacan terusan 

 Behrensmeyer, Anna K., Damuth, J.D., DiMichele, W.A., Potts, R., Sues, H.D. & Wing, S.L. (eds.) (1992), Terrestrial Ecosystems through Time: the Evolutionary Paleoecology of Terrestrial Plants and Animals, University of Chicago Press, Chicago and London, ISBN 0-226-04154-9 (cloth), ISBN 0-226-04155-7 (paper)
 Haines, Tim (2000) Walking with Dinosaurs: A Natural History, New York: Dorling Kindersley Publishing, Inc., p. 65. ISBN 0-563-38449-2
 Kazlev, M. Alan (2002) Paleos website Diakses 8 Jan 2006
 Mader, Sylvia (2004) Biology, eighth edition
 Monroe, James S., and Reed Wicander. (1997) The Changing Earth: Exploring Geology and Evolution, 2nd ed. Belmont: West Publishing Company, 1997. ISBN 0-314-09577-2
 Ogg, Jim; June, 2004, Overview of Global Boundary Stratotype Sections and Points (GSSP's) http://www.stratigraphy.org/gssp.htm Diakses 30 Apr 2006.
 Taylor, P.D. and Wilson, M.A., 2003. Palaeoecology and evolution of marine hard substrate communities. Earth-Science Reviews 62: 1-103.

Pranala njaba 

 Examples of Jurassic Fossils

Skala wektu géologi