Fossil Hammatoceras Ammonite

拍品描述

Jurassic Period, circa 183-176 million years B.P. Large Hammatoceras insigne specimen showing the characteristic discoidal form with strong ribbing. 750 grams, 16.1 cm (6 1/4 in.). [No Reserve] From Toarcian Caluados, France. From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. 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.

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