A construction worker in Oklahoma recently found part of a skull and tusk of a Columbian mammoth.  Mammoth remains are found a couple of times per year in that part of the country.  They must have been plentiful back then.  From the Spanish wire service EFE:

Archaeologists have found a mammoth skull and two tusk fragments in a sand pit in northeastern Oklahoma, media reports said.

The Oklahoma Archeological Survey, or OAS, identified the animal as a Columbian mammoth, one of the last species of that giant mammal to inhabit both North America and Central America, ranging between what are today the United States and Costa Rica.

“The exact age of the deposit has not yet been determined,” the OAS said in a post on its Facebook page.

Archaeologists went to the scene after receiving images of part of a skull being dug out of the sand near Alva, located 240 kilometers (150 miles) northeast of Oklahoma City.

Before becoming extinct more than 11,000 years ago, mammoths were common during the Pleistocene epoch in this central area of the United States, where two or three mammoth remains are found every year, archaeologists say.

The Columbian mammoth could reach a shoulder height of 4 meters (13 feet), weigh 8 to 10 tons and have a life span of 80 years…