"I had chills and shivers up and down my spine." While performing routine fieldwork in the redwood forests south of San ...

A field survey in San Mateo County, California, has revealed the fossilized tooth of an adult Pacific mastodon, an ice-age ...

A researcher surveying a San Mateo County creek stumbled upon a preserved Pacific mastodon molar estimated to be at least ...

A massive fossilized tooth discovered in a California preserve is giving scientists a rare glimpse into the Ice Age and the ...

While numbering the primary teeth under this system, the naming begins from the upper arch (both the quadrants), starting with the letter A and proceeding sequentially through J. Naming of primary ...

Add Yahoo as a preferred source to see more of our stories on Google. Despite the many real conversations out there surrounding pregnancy—infertility, miscarriage, or high-risk complications—there's ...

Pregnancy happens after an egg is fertilized and burrows into the womb. Sometimes, though, these delicate beginning stages can get mixed up. When this happens, a pregnancy may not go the way it should ...

A molar found in a cave in Laos may belong to a member of the Denisovans, a group of ancient humans first identified in 2010. If confirmed, it would be the first fossil evidence of the Denisovans in ...

A molar pregnancy is one in which the development of the normal fetus and its surrounding membranes is replaced by the abnormal formation of a mass of vesicles and cysts. This develops from the ...