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These papillae are epithelial thickenings of the conjunctiva and are situated above the mesenchymal sclera. Here, we present evidence that the conjunctival papillae, which are required for the induction and patterning of the underlying scleral ossicles, require epithelial pre\u2010patterning and have a placodal stage similar to other placode systems. We also suggest modifications to the Hamburger Hamilton staging criteria that incorporate this change in terminology (from \u201cscleral\u201d to \u201cconjunctival\u201d papillae) and provide a more detailed description of this anatomical feature that includes its placode stage. This enables a more complete and accurate description of chick embryo staging. The acknowledgment of a placode phase, which shares molecular and morphological features with other cutaneous placodes, will direct future research into the early inductive events leading to scleral ossicle formation.<\/jats:p>","DOI":"10.1002\/dvdy.128","type":"journal-article","created":{"date-parts":[[2019,10,30]],"date-time":"2019-10-30T12:03:35Z","timestamp":1572437015000},"page":"164-172","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["An overlooked placode: Recharacterizing the papillae in the embryonic eye of reptilia"],"prefix":"10.1002","volume":"249","author":[{"given":"Paige M.","family":"Drake","sequence":"first","affiliation":[{"name":"Department of Medical Neuroscience Dalhousie University Faculty of Medicine  Halifax Nova Scotia Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karyn","family":"Jourdeuil","sequence":"additional","affiliation":[{"name":"Department of Animal and 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