The scientific tourist #346 — Dilophosaurus tracks

If you happen to be in the neighborhood of the Glen Canyon Dam, I’d definitely recommend you take the time to swing through the visitor’s center.  Along with all sorts of artifacts and displays on the building of the dam, there’s also this bit of more-ancient history — the 170 million year old tracks of a Dilophosaurus:

Dilophosaurus Tracks

First appearing in the early Jurassic period, the Dilophosaurus (named for the pair of bony crests on its head was a one-ton, twenty-foot long carnivore — a smaller version of one was presented (with much creative license, with a neck frill) in the first Jurassic Park movie.  This real one left its mark in the marshy riverine deposits of the Kayenta sandstone formation, to be uncovered in our time in a nearby side canyon.

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