🪵 Fossil Peanut Petrified Wood Slab – Classic Driftwood with Tunnel Texture This larger slab of Peanut Wood shows off the iconic tunnel-like structures created by ancient Teredo (shipworm) larvae during the Cretaceous period. The tunnels run across the length of the piece, offering some fantastic opportunities for creative cabbing or display. The contrast and patterning make this a real standout from the old Australian stock. 📏 Measurements (inches - longest - approx): 4.7 x 3.9 x 0.36 Peanut Wood is a rare form of petrified driftwood from near Carnarvon, Australia, formed when marine bivalves known as Teredo bored holes into floating wood.