![Denisova finger bone fragment on chalk outline of hand showing anatomical position. Credit: Wikipedia](https://pbs.twimg.com/media/D2voE08XQAAmvYo.jpg)
![Denisova cave fossil collection, credit Richard Roberts and coworkers.](https://pbs.twimg.com/media/D2vt2MIX0AEjhsO.jpg)
![Ngawi cranium from CT scan data. Credit: Yousuke Kaifu and coworkers 2015](https://pbs.twimg.com/media/D2vw2juWoAEXURY.jpg)
![Xuchang skull from Middle Pleistocene of China](https://pbs.twimg.com/media/D2vx4UlWkAEOLjw.jpg)
![Teeth from Daoxian, China. Credit: Song Xing](https://pbs.twimg.com/media/D2v0CY5WkAA3m6R.jpg)
![](https://pbs.twimg.com/media/D2v2DSXWwAA9eFn.jpg)
![Chronology of Denisova cave, from Roberts and coworkers](https://pbs.twimg.com/media/D2v4ffKWwAYbT16.png)
![](https://pbs.twimg.com/media/D2v-grLXcAA1r4e.jpg)
![](https://pbs.twimg.com/media/D2wBHC-WkAAdrzq.jpg)
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