From Discovery News:
The object, which will be documented in the March issue of the Journal of Archaeological Science, is made out of a large elk antler and has been radiocarbon dated to about 10,900 years ago.
"The ornament is composed of groups of zigzag lines and a human representation, probably a woman with spread legs with a short zigzag nearby," lead author Tomasz Płonka told Discovery News. "The woman may be nude, but the geometrical style of representation does not allow us to answer (this question)."
The researchers aren't yet certain if the images on the carved antler are associated with Venus figurines, statuettes of women with exaggerated sexual features that date to as early as 35,000 years ago. Some Venus figurines have been excavated in Poland not too far from the Swidwin site.