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6 inches in diameter
The coelacanth has no real commercial value apart from being coveted by museums and private collectors
Because of their nearly perfect condition it is assumed that their death was not caused by force
about 112 million to 97 million years ago
Like many carnivores dinosaurs T-rex often broke or shed its teeth while feeding
Didelphodon, skull Posters 6 inches in diameterDidelphodon (meaning "two womb tooth") is a genus of stagodont metatherians (extinct carnivorous mammalian clade that includes all mammals more closely related to marsupials than to placentals) from the Late Cretaceous of North America. Although perhaps little larger than a Virginia opossum, with a maximum skull length of 12. 21 centimeters (4. 81 inches) and a weight of 5 kilograms (11 pounds), Didelphodon was a large mammal for Mesozoic standards.