In the Bibliothèque Municipal in Troyes, the manuscript ‘Vie de sainte Marguerite’ is being kept [1, 5]. This is the story about Marguerite of Antiochia, in 744 octosyllabic verses in French written by Wace in the 12th century , and illuminated in the 14th century [3, 4].
On folio 10v in the lower margin we see two hybrid people, both with sword and shield, fighting with each other. They emerge both from a stylised, dextral shell which is unicoloured and seen in top view; there is an interrupted spiral line of dots on each of the shells.
 BMTroyes, ms. 1905.
 http://www.arlima.net/uz/wace.html (23.i.2014).
 http://bit.ly/1c6xxjh, note to f.010v (23.i.2014).
 Stones, M.A. (1990). Le ms.Troyes 1905, le recueil et ses enluminures. In: H.-E.Keller (ed.) La Vie de sainte Marguerite par Wace. Beihefte zur Zeitschrift für romanische Philologie 229: 183–333.
 Due to technical reasons, the coloured digitalised manuscript was not available on the website; I’m indebted to Pascal Jacquinot (Médiathèque du Grand Troyes) for sending hi-res b/w files.