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RARE MASSIVE INTACT HARPOCERAS AMMONITE SLAB FROM HOLZMADEN Holzmaden Black Shale Formation (Lias Epsilon) - Stuttgart, Germany JURASSIC PERIOD: 200 million years ago From the world-renown Black Jurassic oil-bearing shale of Holzmaden, Germany comes this MONSTROUS and exquisitely preserved Harpoceras falcifer species ammonite. Specimens of this quality and size are seldom discovered at this highly unique formation famous for producing some of the world's finest Jurassic marine life fossils. Modern quarry efforts have failed to produce many specimens like this that were once found in greater frequency many years ago. If you wish to accent a room with one of nature's most beautiful prehistoric masterpieces, then this fossil would really set off any interior. This is THE LARGEST UNBROKEN ammonite slab from this site we have ever offered! Furthermore, it is an unusually rare LARGE Harpoceras ammonite from Holzmaden with the finest preservation and orientation on its original slab. Even if this huge Harpoceras was on a small slab, it would be a superb offering but here it is on such a beautifully clean and massive shale slab with no defects. Perfectly centered and trimmed to a gentle rectangle, this giant all-natural masterpiece cannot be improved! The entire ammonite is complete and possesses dense, original gold pyritization to the shell imprint that is so HIGHLY-prized. This gold tone to the creatures on the slab is COMPLETELY GENUINE AND NATURAL, formed by mineralization as the fossil was formed millions of years ago. Amazingly, the slab did not sustain any breakage when it was split so this massive beauty is INTACT WITH NO REPAIR, NO RESTORATION OR FABRICATION! This magnificent specimen is not only valuable for its superb fossil size, quality and preservation but it possesses immense architectural value when used in any interior setting. Caution should be used when purchasing any large Holzmaden shale fossils. Most are expertly cut out and glued into a large clean slab that is NOT the original slab in which the fossil was found. We guarantee this specimen is 100% original! Some of the largest dinosaurs that ever walked the earth were in existence when these ammonites swam in the ancient seas alongside massive plesiosaurs and ichthyosaurs! Absolutely our highest recommendation. Even if you could care less about fossils of any kind, you would be hard-pressed to not find this specimen anything less than breath-taking!
Ammonites varied greatly in size.
The largest
known
as small
as 2 cm (0.75 in) in diameter. During the Jurassic and Cretaceous
periods, ammonites evolved more streamlined shells for swimming and the
structure of the shell became stronger. Different shell shapes emerged
as well, such as snail-like or uncoiled. The shells of
ammonites
had hollow chambers separated by walls called septa. A tube called the siphuncle, connected the body with the
chambers allowing the animal to fill them with water or air, changing
its buoyancy in order to Ammonites probably lived for one to six years, with the majority living two to four years. They fed on plankton (tiny free-floating organisms), sea lilies, and smaller orthoceras. Although many fed off the ocean floor, others may have caught plankton while floating or swimming via jet propulsion, expelling water through a funnel-like opening to propel themselves in the opposite direction.
SIMPLY GORGEOUS NATURAL UNBROKEN MASSIVE SPECIMEN - A SUPREME ARCHITECTURAL DISPLAY PIECE! 28.75" x 21.25" wide, ammonite 8.75" wide SOLD AMX-013 INCLUDES STAND Actual Item - One Only |
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1850 |
