Woolly Rhinoceros Juvenile Milk Tooth

Showing two Knightia alta fish on a rectangular limestone matrix with a partial third fish. 1.14 kg total, 20.5 x 14.5 cm



From Wyoming, USA. From the private collection of a Devon, UK, lady.

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 Uinta, 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.

On a rectangular matrix, possibly Diplomystus. 335 grams, 16.5 cm



From Green River formation, Wyoming, USA. 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.

Boxed group of mainly prismatic colourless specimens, some twinned and three specimens with dark dendritic inclusions. 2.93 kg total, 45-88 mm



From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.