Come TOM di Agosto TDI ha scelto uno dei pezzi più strani e affascinanti. Un Campione GEM, raro ed enorme. Spathacalymene nasuta (Ulrich, 1879) Silurian Osgood Formation Ripley County, Indiana, U.S.A. TDI031 dim: 7 cm Disponibile sul nostro SHOP August's TOM was published. TDI is offering one of the most interesting and strange trilobite from Silurian of Osgood Formation. It is a GEM piece for any collectors Following photos and data: Spathacalymene nasuta (Ulrich, 1879)