With paleontology overtaking geology as his main interest, Testot-Ferry started to probe the Crot-du-Charnier site at the foot of the
Rock of Solutré in 1866, which had outcrops of
horse bones (called "magma"). Shortly afterwards, Testot-Ferry discovered, along the road crossing Crot-du-Charnier, a zone of homes from the "Reindeer Age" (the Upper Paleolithic era of prehistory) containing numerous flint tools and the remains of fauna. Although
reindeer predominated, horse,
elephant,
red deer,
fox,
wolf and even cave
tiger were also found. In some homes he found more than 2,000 flints and almost 400 reindeer
antlers. In contrast to cave sites which had been discovered, in Solutré it was difficult to determine the size of the deposits and their boundary. Testot-Ferry proceeded to survey the area along with Adrien Arcelin. The two men decided to sift the earth with their hands, so that the remains would be methodically collected and examined. In 1868, Testot-Ferry concluded that a hunting station had existed at the foot of the rock: In 1867 Testot-Ferry had also discovered a small statuette of a deer. This was first known specimen of Solutrean art, and attested to the culture of prehistoric man in the same way as
cave paintings. ==A life devoted to the sciences==