Mammoth tooth fossils

Numéro d’image : 11640717
Mammoth tooth fossils
Mammoth tooth fossils. Fossilised molar teeth from juvenile mammoths (Mammuthus sp.),showing the structure of the chewing surface (ridges). Mammoths were large mammals found across North America,Europe and Asia from the Pliocene Epoch (around 4.8 million years ago) to the Pleistocene epoch (around 4500 years ago). They had six pairs of molars grow into their lower and upper jaw during their lifetime. Each pair was slowly grounded down and then replaced by a bigger set. When the final pair was finished,at about 60 years of age,the animal was no longer able to chew its food and would die from starvation. These specimens were found at the bottom of the North Sea and range in size from 7 to 20cm
Licence : Droits gérés
Crédit: Science Photo Library / Wiersma, Dirk
Taille de l’image : 5197 px × 3465 px
Model Release : Non requis
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