Solarium ornatum ( identification as to confirm)
Voici un exemplaire de solarium ornatum ( collection d'un collègue )
Sample below size x1. below an enlarging ( x2,5 )

My bibliogaphiques references below

LES FOSSILES DE L'ALBIEN DE L'AUBE by "l'Association Géologique Auboise." 1982

solarium ( Nummocalcar ) ornatum (d'Orbigny) x2,4 Courcelles
in d'Orbigny,Pal.F.T.cré.,II, pl173, fig3-4.
L'Albien de l'Aube, édition du CNRS, 1979, volume 5
Fossiles de France, J.-C. Fischer, Masson 2éme édition 1989
Page 235, picture 5 à 8
This identification is only one suggestion to give matter to discution, because it is the only specimen preserved with the "shell" that I had at this date.

An other reference to be checked ( I do not have it under the hand for the moment )
ornatum (Solarium) J. de C. Sowerby, 1836: 336, pl. 11, fig. 13. (= S. subornatum
d’Orbigny, 1850c: 130) Cretaceous, Europe.

A few links
:http://davjol.free.fr/solarium(nummocalcar)ornatum.htm

http://www.mapress.com/zootaxa/2005f/zt01101p119.pdf