Simplify the following text for a Grade 10 native English-speaking person.
Original: It is generally accepted that Clovis people hunted mammoth as Clovis points have repeatedly been found in sites containing mammoth remains . Mammoth was only a small part of the Clovis diet ; extinct bison , mastodon , sloths , tapir , palaeolama , horse ( the association of Clovis with horse remains is in dispute as no actual Clovis artifacts have been found in direct association with fossil horse remains ) and a host of smaller animals have also been found in Clovis sites where they were killed and eaten .
Simplified: They are called `` Clovis culture '' because archaeologists first found their artifacts at Clovis , New Mexico .