From Fictitious and Symbolic Creatures in Art by John Vinycomb, p118 The charges in the arms of Whitby Abbey, though blazoned as coiled snakes, are almost certainly meant to represent fossil ammonites, which are common in that area.
Arms of Villefranche-sur-Saône, France Blazon: Gules a city gate flanked by a tower on the dexter argent masoned sable, on a chief azure three fleurs-de-lis or each charged with a baton of the field.
Arms of Briançon, France Blazon: Azure an open city gate with three turrets argent, masoned and windowed sable
Arms of Arles, France Blazon: Azure a lion sejant guardant or, holding in the dexter paw a labarum of the last charged with the letters “CIV.AREL” sable
Arms of Montmorillon, France Blazon: Gules a tower or, on a chief sable four palets of the second
Arms of Chatellerault, France Blazon: Argent a lion rampant gules, on a bordure sable eight bezants
Arms of Parthenay, France Blazon: Barry of ten argent and azure, a bend gules