Bivalve In Sedimentary Matrix Appraisal

Fossilized Seashell Embedded in Rock (Bivalve in Sedimentary Matrix)

This item is a geological specimen, specifically a natural rock formation with an embedded fossilized seashell. The rock itself appears to be a light brown to grayish-brown sedimentary structure, possibly limestone or a similar mineral given the presence of a marine fossil and the location context (Fasano, Italy). The texture of the rock is rough and uneven, indicative of natural weathering and formation. The most prominent feature is the clearly visible embedded bivalve seashell. The fossilized shell exhibits distinct radial ridges or ribs extending from the hinge point towards the outer margin, which are characteristic of certain bivalve species such as scallops or cockles. The shell's original color has been effaced by the fossilization process, appearing as a whitish to light cream color that contrasts with the darker surrounding rock matrix. Part of the shell's interior is visible, showing a coarse, granular infill, likely composed of the same sediment that formed the rock. The fossil appears to be well-preserved, though some areas of the shell's outer edges seem to have fractured or eroded, blending into the rock. There are no discernible maker's marks, signatures, or stamps, as this is a natural formation. Based on the geological activity and history of the Puglia region where Fasano is located, such fossils are common in Cretaceous to Cenozoic marine sedimentary deposits. The condition of the specimen is natural, with expected imperfections from fossilization and geological processes, including minor chips and exposed matrix. Its quality is determined by the clarity of the fossil's features against the matrix, which is quite good.