Papula

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Papula" – news · newspapers · books · scholar · JSTOR (July 2023) (Learn how and when to remove this message)

Papulae (sing. papula; also occasionally papulla, papullae), also known as dermal branchiae or skin gills, are projections of the

. In a living specimen, the dermal gills can be extended or withdraw.

References