Here is a large and moderately preserved specimen of a fossil sea urchin of the species Balanocidaris marginata. The fossil sea urchin still shows some spines in authentic embedding. The capsule itself, without the spines measures about 47 x 40 mm. Regular Echinoids fossils with spines are often offered as so-called montages or assemblages. This euphemistic term means that the capsule and the spines are artistically and artificially assembled on a often so called "original matrix". Most of the time, all parts come from the same location, but most likely from different individuals. This is not the case with this Balanocidaris . Everything belongs together here and is also in its original place on the matrix. | |||
Location: | Coastal outcrop, Charente-Maritime,, France | ||
Size Matrix: | about 176 x 136 mm | ||
Age: | Upper Jurassic, Kimmeridgian (about 150 Mill. years) |