Mongolian slant The palpebra are the upper and lower eyelids which, viewed together, make up the shape of the eye.

Kontridze was a specialist in plastic and reconstructive surgery on palpebra and conjunctiva.

Often called a third eyelid or haw, it may be referred to in scientific terminology as the plica semilunaris, membrana nictitans or palpebra tertia.

H. palpebra was collected from the Lower Cambrian of Sweden (Upper part of the Grammajukku Formation, in the Holmia kjerulfi-zone, E bank of the Torbacken rivulet, about 600 m South-Southwest of Delliknas, the Laisvall area, central Swedish Lapland).