United States Of America Collection (page 2)

Petrified wood
Close-up showing the petrified wood from the coniferous forest, Arizona, U.S.A dating back to the Triassic period 200 to 251 million years ago

Symphoromyia pachyceras, snipe fly
Snipe fly from California, U.S.A. Females of this fly feed on blood which is necessary for egg production. Specimen held at the Natural History Museum, London

Hydnoceras, a hexactinellid sponge
Over 17 cm tall, this natural cast of the hexactinellid sponge Hydnoceras comes from Devonian rocks of New York State

Myadestes woahensis, amaui
Photograph of Myadestes woahensis specimen. Photographed by Harry Taylor, 2009. This species is now extinct

The Estherville mesosiderate
The Estherville mesosiderite formed after a catastrophic collision between two asteroids. Mesosiderites are an irregular jumble of metal grains and angular pieces of rock

Sequoia affinis, fossil tree
This specimen of Sequoia affinis is from Florissant, Colorado, USA, and is now held at the Natural History Museum, London

Peridot group
Fine cut peridot of 146 carats (centre) with crystals and rough mass (right) from Zebirget, and Hawaiian basalt containing olivine crystals (left)

Benitoite crystal and cut stone
Benitoite was discovered in 1906 near the San Benito river in California which remains the only known locality for this (barium titanium silicate) mineral

Araucarioxylon arizxonicum, conifer
Polished section through the trunk of Araucarioxylon arizxonicum, the dominant conifer of Petrified Forest National Park, Arizona, USA. Width approx. 25 cm. Dates back to the Late Triassic period

Stylemys nebrascensis, tortoise carapace
Depicted here is the carapace or shell of the Oligocene tortoise (Stylemys nebrascensis). Specimen originates from Western U.S.A

Calcite comprises of (calcium carbonate) and is one of the most abundant minerals on Earth. Specimen originates from Tennesee, U.S.A. now at the Natural History Museum, London

Benitoite cut stone
Benitoite was discovered in 1906 near the San Benito river in California which remains the only known locality for this (barium titanium silicate mineral)

Rutile
A specimen of the mineral rutile (titanium oxide) which is a major ore of the metal titanium. This specimen is from Graves Mountain, Lincoln County, Georgia. USA

Cancer terrestris
Land crab plate 32 from Natural History of Carolina, Florida and the Bahamas, Vol 2 by Mark Catesby

Map from journal
Printed map of the East coast of America (Florida, Georgia and Alabama) with crayon, by William Bartram (1739-1823). 180 x 280 mm

Travels map of east coast of Florida
Engraving by William Bartram (1739-1823), 1791. Size: 255 x 195 mm. Original artwork held by the Natural History Museum

The Great Alachua Savanah in the province of East Florida
Pen and ink by William Bartram (1739-1823), 1775. Original artwork held in the Natural History Museum, London. 204 x 250 mm

Tourmaline crystal
A bi-coloured pink and green tourmaline crystal from California

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