|Classification:||Chemical sedimentary rock, oolitic-bioclastic grainstone|
|Mineral composition||Calcite, dolomite|
|Fossils:||Bivalves, gastropods, crinoids, brachiopods|
|Location:||Dibona Refuge (46°32'5.09"E) (46°32'1.61"N 12° 4'18.87"E)|
|Era:||Lower Carnian (approximately 232 million years ago)|
|Depositional environment:||Submerged shore|
a handful of this sand into a solid substance, a glue, a resin, or cement, to then be cut into slices so as to observe the sections of these shells. If you had done this, the result would have been more or less what you see in this photo. The shells have very different and complex shapes, and once sectioned they become unrecognisable to the untrained eye. In this photo you can see some bivalves, gastropods (snails), sea urchins and brachiopods, together with granules of calcium carbonate, none bigger than a couple of millimetres.