According to this National Geographic Article: 

Quote

Two well-preserved teeth recovered from sediments in Germany offer intriguing clues to how some of our distant primate relatives eked out a living in what is now northern Europe. But do these teeth, as many news outlets have proclaimed, “rewrite human history?” In a word, no.

The article also contains a link to the original paper published on this finding, which definitively doesn't "rewrite human history". Enjoy!

Nice find doc, although you gave away the plot in the O.P. In fact there are also doubts that the teeth belong to a hominin at all.  In the same article, it was noted:

Quote

Sergio Almécija, an anthropologist at George Washington University who also studies pliopithecoids, agrees. As for the supposedly hominin-like canine, the experts’ opinions range from interest to dismissal. Begun even doubts that it's a canine.

“The 'canine' looks to me like a piece of a ruminant tooth,” Begun says by email. Ruminants are cud-chewing, plant-eating mammals such as cows and sheep. “It has a funny break that makes it look a bit like a canine, but it is definitely not a canine, nor is it [from] a primate.”

https://news.nationalgeographic.com/2017/10/ancient-teeth-found-germany-dont-rewrite-human-history-science/

Thanks. However, I morn the loss of those 1920 specimens that the article mentioned and the wealth of insight they certainly could have provided.