Tooth growth patterns in fossils of the mouse-like Jurassic mammal Krusatodon show that it grew slowly and had a “surprisingly long” lifespan compared to mammals of similar size today.1 A paper in Nature describes two “exceptionally complete” Krusatodon specimens, one an adult and the other a juvenile, that were found on Scotland’s Isle of Skye.2 The fossils are dated … More…
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