Fossil Ammonite Pendant Necklace

A nickel-iron meteorite (IAB). 7.3 grams, 22 mm



Ex Cambridgeshire, UK, collection.

A crater field of roughly 26 craters was found in the vicinity of this crater, which is estimated to date to 4-5 thousand years BP. The age of the meteorite itself is thought to be c.4.5 billion years, formed as part of the development of this solar system. The largest two fragments, the 30.8-ton Gancedo and 28.8-ton El Chaco, are among the heaviest meteorite masses ever recovered on Earth. In 1576, the governor of a province in Northern Argentina commissioned the military to search for a large mass of iron, which it was believed the local people claimed had fallen from the sky and which they used for their weapon production. The expedition discovered a large mass of metal, which was assumed to be an iron mine, and brought back a few samples, which were described as being of unusual purity. Following the legends, in 1774, Don Bartolomé Francisco de Maguna rediscovered the iron mass. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London. In 1990, it became protected by law.

Comprising eight Mosasaur prognathodon teeth set in a composite matrix. 1.62 kg, 21 cm



Ex Cambridgeshire, UK, collection.

The Mosasaur is an extinct, large marine reptile with an elongated body, long snout and paddle-like limbs. Found worldwide, they competed with other well-known sea predators of the Late Cretaceous, such as plesiosaurs and ichthyosaurs, for food, existing primarily on a diet of ammonoids, cuttlefish and fish.

Fragment of a Majungasaur tooth mounted in a plastic container with acetate lid; explanatory label. 45 grams total including case, tooth: 19 mm



From Madagascar. Property of a Bristol, UK, gentleman collector.

The Majungasaur was a bi-pedal therapod predator, up to 7 meters long, weighing around 1,000 kg.