Natural History - Rare British Fossil Eteoderoceras Ammonite Display with Amazing Spines

Including small specimens panned from the Eucumbene River, Kiadra, New South Wales, together with specimens from Queensland; housed in a cylindrical container. Container 12.78 grams total, 39 mm



Found River Kiandra, New South Wales, Australia, 1962. Private U.K. family collection formed in the early 1970s. The property of Mr and Mrs P.R. of East Sussex. Thence by descent to family members.

Comprising a large fragment of fossilised dung. 1 kg total, 12.4 cm



From the Morrison Formation, Colorado, USA. Collected 1930-1960. From the collection of the palaeontologist R Gledhill.

The Mioplosus labracoides fish in a rectangular matrix. 837 grams, 16.5 cm



From Warfield's Quarry, Kemmerer, Green River Formation, Wyoming, USA. Ex Lincolnshire, UK, collection.

In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time.