An anthropologist finds a fossil that is 2 million years old, and it had simple tools nearby. To which species could the specimen belong?

I assume that it's a hominid fossil - since it has tools and mostly only hominids are found to use tools (although birds are also known to use tools).

It could be Homo erectus, which lived between 2 million years ago and 70 000 years ago, but more likely it's homo habilis, which lived from 2.5-1.5 million years ago.