Cimolodon Multituberculate Hell Creek Early Mammal Tooth

Cimolodon sp

Class Mammalia, Subclass Allotheria, Order Multituberculata, Family: Cimolodontidae

Geologic Time: Upper Cretaceous, Maastrichtian Stage (~67 million years ago)

Size (25.4 mm = 1 inch): Fossil is 4 mm long by 4 mm wide

Fossil Site: Hell Creek Formation, Carter County, Montana

Code: HCF12

Price: $95.00


Cimolodon Fossil ToothDescription: Early mammals are most often represented by teeth because of their relative abundance in each animal and the fact that they are made the hardest material. Indeed, some paleontologists have joked that the evolution of some can be seen in the fact that teeth gave rise to descendant teeth without anything else having been involved. This tooth is an upper anterior premolar of a multituberculate. The Multituberculata have the longest fossil record of any group, persisting from the Late Triassic/Early Jurassic until the Oligocene. They managed to survive the end-Cretaceous extinction event, and rose to prominence in the Paleocene, frequently making up more than half the species in the mammal fauna. While they were rodent like in appearance and habit, they were replaced by true rodents during the Oligocene some 35 million years ago. This specimen has excellent cusps and would make a fine addition to any collection of Late Cretaceous specimens.

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