WebScientists now know that ammonites are extinct molluscs that jet propelled themselves through the oceans of the Mesozoic Era. They died out at the same time as dinosaurs 66 million years ago. Their nearest living … WebAmmolite is a rare, iridescent, gem-quality material cut from the fossilized shells of extinct sea creatures. Found only in the Bearpaw Formation in Alberta, Canada, this organic gemstone has a dazzling …

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WebNov 24, 2014 · It’s the story of a stone, of a culture, a history and of tradition—the story of the Navajos. The stone is turquoise, an opaque mineral, chemically a hydrous phosphate of copper and aluminum.... WebMar 31, 2024 · Homo erectus, (Latin: “upright man”) extinct species of the human genus (Homo), perhaps an ancestor of modern humans (Homo sapiens). H. erectus most likely originated in Africa, though Eurasia cannot be ruled out. Regardless of where it first evolved, the species seems to have dispersed quickly, starting about 1.9 million years ago (mya) … north fork long island vineyard map

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WebMay 30, 2013 · Called thrombolites, or clotted stones, these clumpy aggregations were not as fine-layered as the stromatolites but are similarly produced by biofilms of microorganisms. WebJul 1, 2024 · Overview: Remains of one of the most recently discovered early human species, Homo floresiensis (nicknamed ‘Hobbit’), have so far only been found on the Island of Flores, Indonesia. The fossils of H. floresiensis date to between about 100,000 and 60,000 years ago, and stone tools made by this species date to between about 190,000 … WebHexagonaria percarinatum is a species of fossil coral commonly found in Michigan. Its scientific name, which means “six-sided,” refers to the shape of the starlike features covering its surface, called corallites. north fork lumber company korbel ca