I found this mystery fossil at the Castle Hayne Quarry near Wilmington, North Carolina over 15 years ago. It was in limestone of the Eocene age Castle Hayne Fm. It consists of parallel shallow indentations that have grayish looking coatings in the bottom of them. I have had suggestions that it was a plant impression, soft coral, and bryozoan. I don't know what fossil forum to have it identified when nobody is sure if it's plant or animal. Any suggestions? The long direction of the specimen is about 3 inches by two or two and a half inches. 7.5 cm by 6 cm