What type of fossil or stone is this found at beach of the Black Sea? I need some help identifying this stone or fossil. I found it at beach of the Black Sea. The Stone or fossil approx 14 cm x 12 cm x 9 cm (5.5 x 4.7 x 3.5 inches).
Photos below (60x microscope)
Its not a fossil, it is just a septarian concretion. They come in a wide array of shapes and sizes but the crack pattern and crack fill is a dead giveaway.