How paleontologists are using fossilized shark teeth to date the past
Sharks have ruled the Earth’s oceans for 400 million years and recent research on fossilized shark teeth has led to the ...
朝日新聞社3y
Fossil jawbone of primitive walrus poses new theories
“They not only indicate that the primitive walrus species had an ability ... Although no teeth are left, back tooth sockets remain. The fossil was found by a resident surveying geological ...
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Extinct walrus-like mammal that sucked prey in prehistoric times discovered
Fossil evidence has led to the identification ... The fact that the modern walrus has a fused mandible and reduced teeth allows it to minimize the tensile and compressive forces that the oral ...
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A 13-year-old found a 5-million-year-old fossil, and now there's a new species of walrus named in his honor
His discovery has now led to the identification of that ancient species of walrus ... shark teeth, and whale bones. "I was just absolutely on fire and ecstatic about finding fossils," he told ...
The Conversation9d
Fossil shark teeth are abundant and can date the past in a unique way
Our study was one of the first to date Florida coastal deposits using fossil shark teeth and a technique that looks at variations in ocean strontium. Strontium is a chemical element that occurs ...
The Scientist2y
Fossilized Fish Teeth Could Be Earliest Evidence of Cooking
Comparing the crystals in the ancient teeth to the modern teeth, as well as to fossil fish teeth they knew hadn’t been exposed to heat, the researchers found that the Gesher Benot Ya’aqov fish teeth ...
Times Union9d
Fossil shark teeth are abundant and can date the past in a unique way
MacFadden, University of Florida (THE CONVERSATION) The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ancient times ...