http://www.newsweek.com/scutoid-scientists-discover-entirely-new-shape-and-its-been-hiding-inside-1045097

Scientists have discovered a brand new three-dimensional shape, dubbed a scutoid, that is entirely new to geometry, according to a study published in the journal Nature Communications.

An international team of researchers demonstrated that epithelial cells—the “construction blocks” of organisms that cover the surfaces of many organs, such as the skin—take the form of the previously undescribed shape, which enables them to pack tightly together and form complex, curved structures.