Discover and read the best of Twitter Threads about #JurassicWyoming
Most recents (4)
Supermarkets in Wyoming are everything I’d ever hoped they’d be. 
Like most people, my absolute favourite western North American sequence of Middle Jurassic to Upper Jurassic age marine shale, sandy shale, sandstone & limestone has always been the Sundance Formation - & today I will get to tramp an entire stretch of it! #JurassicWyoming
Woohoo - Jurassic oysters! #SundanceFormation
Woohoo - the internal skeleton of a belemnite! #SundanceFormation
A petrified chunk of 150 million year old conifer. There are growth rings waiting to be found inside this fossil, bearing witness to the cycles of seasonal aridity and rain that would powerfully have affected the ecosystem in which dinosaurs lived & died #JurassicWyoming
We find the bone marrow of a sauropod #JurassicWyoming
I’ve had the most lovely day...
The foot (actually hand) print of a 50 ton sauropod. Just awesome. “Tracks are an unplayed record of movement. The most difficult vinyl in the world to play” - Professor Phil Manning
The claw imprint left by the hind-leg of a sauropod in what was once soft & oozing mud #JurassicWyoming
Because Phil Manning told me it was
