Also in 1897, French paleontologist Henri-Émile Sauvage referred a tail vertebra from the Tithonian Mont-Lambert Formation of France,[2] catalogued in the collection of the Musée Géologique du Boulonnais at Boulogne-sur-Mer in France, to Iguanodon prestwichii (now Cumnoria prestwichii), a herbivorous iguanodont.

[4] However, by a mistake of the printer, the footnote in which the new name was mentioned was not placed at the end of the section referring to the fossil but adjacent to a citation of Saurornithoides Osborn 1924, giving the false impression Nopcsa intended to rename the latter genus.

[6] The name Teinurosaurus was largely forgotten or not even understood to be a synonym of Caudocoelus, until in 1969 John Ostrom revealed its priority.

A number of authors (e.g. Lapparent 1967; Galton 1982) believed that the holotype was destroyed in World War II, but the specimen is still extant, as noted by Buffetaut et al.

[9][10][11] Teinurosaurus was considered by von Huene to be a member Coeluridae, but is now generally seen as a nomen dubium at Averostra incertae sedis.