palpebral bone
http://purl.obolibrary.org/obo/UBERON_0010309
An ossified element investing the upper eyelid. [ http://en.wikipedia.org/wiki/Palpebral_(bone) http://www.ncbi.nlm.nih.gov/pubmed/16496288 ]
Term info
The most extreme development of the palpebral is found in the armored dino- saur Euoplocephalus tutus, where the bone forms a quarter-sphere and adducts to completely occlude the or- bit (Coombs, 1972; Vickaryous and Russell, 2003). Notwithstanding the superficially similar position, palpe- brals and tarsal plates differ both anatomically and developmentally and are not considered homologous (Gauthier et al., 1988)
PMID:16496288 says 'invests' the eyelid, is this consistent across taxa?
palpebral
uberon
UBERON:0010309