This is a stunning example of Macrocrinus mundulus from Edwardsville Formation, Montgomery Co., Indiana, an alien-looking Crinoid (Sea Lilies). This specimen is soo elegant on its frame, a perfect item to hang on th wall or left on the table. The fossil is remarkably complete and beautifully preserved: Large three-dimensional calyx, highly detailed Long stem, extending almost to the root Fossil is perfectly centered in the matrix, creating an outstanding display effect The light tan colour of the shell contrasts well against the brown mudstone. 100% natural, not restored, no glue. A smaller secondary specimen is also visible near the main stem, further enhancing the composition The preservation is exceptional, and the piece is 100% natural, with no restoration or repairs – a rare and highly desirable condition. Species: Macrocrinus mundulus Age: Mississipian, Carboniferous (~330 million years ago) Locality: Montgomery Co., Indiana, USA Crinoid size: 14 cm (unrolled) Matrix size: 11 × 7 cm Frame size: 21,5 x 16,5 cm Condition: excellent, complete, with no restoration A collector-grade fossil, combining rarity, scientific value, and striking aesthetics. Crinoids are commonly known as sea lilies, though they are animals, not plants. They are echinoderms related to starfish, sea urchins, and brittle stars. They attached themselves to the sea floor and had feathery, tentacle-like appendages which they used to capture particles of food. First appearing in the Ordovician period, 488 million years ago, they still survive to this day in deep water.