3011 - Large Chrysocetus 'Marine Dinosaur' Double Rooted Fossil Tooth. Late Eocene Period, circa 33 million years B.P. Cheek tooth from an early whale Chrysocetus sp., showing the characteristic accessory denticles on both sides and a double root. 112 grams, 10.9 cm (4 1/4 in.).

Large Chrysocetus 'Marine Dinosaur' Double Rooted Fossil Tooth. Late Eocene Period, circa 33 million years B.P. Cheek tooth from an early whale Chrysocetus sp., showing the characteristic accessory denticles on both sides and a double root. 112 grams, 10.9 cm (4 1/4 in.). Property of an Essex, UK, gentleman. Chrysocetus comes from Greek chrysous, 'golden' and ketos 'whale, in reference to the gold-colored bones of the type specimen. It is an extinct archaeocete cetacean belonging to the Basilosauridae, and unlike other basilosaurids, Chrysocetus did not replace its teeth but kept a single set throughout its life. TimeLine Auctions follows a rigorous vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists. See our website for more information.