In a message dated 96-11-16 03:19:26 EST, jpoling@dinosauria.com (Jeff Poling) writes: << None of the references I have, including _The Dinosauria_, lists the era/stage that Archaeopteryx is associated with. They merely say "Late Jurassic." Anybody happen to know the era/stage Archie is associated with? >> This would be Tithonian, uppermost Upper [Late] Jurassic.