The disused Portuguese coal mine of Guimarota, near Leiria, is arguably the most important locality in the world for providing an insight into the evolution of Late Jurassic (Kimmeridgian) mammals and associated small vertebrates over 150 million years ago. The mine was worked for a decade, from 1973 to 1982, purely for its fossils. Tens of thousands of fragmentary bones and teeth plus some skulls and jaws (including some 800 identifiable mammal jaws and 7000 teeth and 750 dinosaur teeth), shells and plant fragments have been recovered thanks to the efforts of Bernard Krebs, the late Siegfried Henkel and local...

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