Description: DP-30. Rare Yellow Bone with lots of red and orange multi-colored cells. Lots of interesting shapes surrounded by fine black or smokey-crystal webbing. Smooth cut on two sides. This is a Mother Rock that could yield some more slabs and still leave a nice specimen. Shown Wet & Dry. Weight 450 Grams. Points of reference are arbitrary - how you display it is up to you! Left Side: Is the smaller cut face and is more pyramid-shaped. Golden Yellow, Mustard Yellow, red and orange cells with lots of different shapes and many are multi-colored cells.4 1/2 inches wide X 2 1/2 X Three inches. Right Side: Larger cut face. Golden yellow, mustard yellow, bright red and orange cells with lots of shapes. Fine black webbing. Right curved edge- SIX inches; Left straighter edge- 4 1/4 inches. 1 1/2 inches (top) to mainly 1 3/4 wide. Top: Rough yellow skin with tan, some blue grey and flecks of garnet colored raised skin.Two inches Thick X 4 1/2 inches to Five inches Tall. Bottom: Pyramid-shaped with one section showing tons of red cells surrounded by tanish-yellow and the other end has a fine white calcite layer with the reds trying to show through.Left edge- Five inches; right edge SIX inches. 1 7/8 thick for red-cell area going to Two inches thick to 2 1/4 inches thick for calcite area. Allosaurus is a genus of large carnivores theropods -a group of dinosaurs that ran on two feet. They lived 155 to 145 million years ago during the Late Jurassic epoch. This dinosaur could grow up to Forty feet from head to tail, (about the size of a T-Rex.) Most Allosaurus fossil skeletons were about twenty-eight feet long. The name Allosaurus means “different lizard” alluding to its unique (at the time of its discovery) concave vertebrae. It is derived from the Greek word (allos- meaning different or other.) One of the earliest fossil remains ascribed to this genus were made by paleontologist Othniel Charles Marsh in 1877. The genus has a complicated taxonomy, and includes at least three valid species, the best known of which is A. Fragilis. The bulk of Allosaurus remains have come from North America’s Morrison Formation, with fossils also known from Portugal. The discovery and early study of Allosaurus is complicated by the multiplicity of names coined during the Bone Wars ( a rivalry between two prominent paleontologists) during the late 19th century. The first described fossil in this history was a bone obtained in 1869, secondhand, by Ferdinand Vandeveer Hayden, the famous explorer whom later conducted the geological surveys that discovered Yellowstone, among other places. The piece came from Middle Park, near Granby Colorado. The locals had identified such bones as "petrified horse hoofs". Hayden sent his specimen to Joseph Leidy, who identified it as half of a tail vertebra, and tentatively assigned it to the European dinosaur genus Poekilopleuron. He later decided it deserved its own genus, Antrodemus. Antrodemus became the accepted name for this familiar genus for over 50 years, until James Henry Madsen (an American vertebrate paleontologist and geologist and main leader of excavations at the Cleveland-Lloyd Dinosaur Quarry in the 1960’s) published on the Cleveland-Lloyd specimens and concluded that Allosaurus should be used because Antrodemus was based on material with poor, if any, diagnostic features or locality information (for example, the geological formation that the single bone of Antrodemus came from is unknown.)
Price: 160 USD
Location: Moab, Utah
End Time: 2025-02-02T19:36:59.000Z
Shipping Cost: N/A USD
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All returns accepted: ReturnsNotAccepted
Country/Region of Manufacture: United States
