1) Archaeological artefact type
Found on
https://www.crosswordclues.com/clue/petrosphere
In archaeology, a petrosphere ({ety|gre|πέτρα (petra)|stone||σφαίρα (sphaira)|ball}) is the name for any spherical man-made object of any size that is composed of stone. These mainly prehistoric artefacts may have been created and/or selected, but altered in some way to perform their specific function, including carving and painting. Se...
Found on
http://en.wikipedia.org/wiki/Petrosphere
No exact match found.
