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Deeper sediments metamorphized into quartzite and form a thin layer ~10 ft (3.0 m) thick between the shale and basement granite. [2] [3] The Marble Mountains Fossil Beds are the site of 550-million-year-old fossils of trilobites, which were among the first animals on earth with eyes
A widespread species of stork with great intraspecific variation. The asphalt stork was described based on material from La Brea, but has since then found in multiple other localities across the United States. Individual asphalt storks could have reached a height of 1.5 m (4 ft 11 in) and a wingspan of 3 m (9.8 ft). † Mycteria wetmorei [105]
Dinosaurs and Other Mesozoic Reptiles of California. Berkeley: University of California Press. 318 pp. ISBN 9780520233157. Mayor, Adrienne. Fossil Legends of the First Americans. Princeton University Press. 2005. ISBN 0-691-11345-9. Murray, Marian (1974). Hunting for Fossils: A Guide to Finding and Collecting Fossils in All 50 States. Collier ...
When a type locality is listed as the site for a formation with many good outcrops, the site is flagged with a note ([Note 2]). When a particular site of note is listed for an extensive fossil-bearing formation, but that site is somehow atypical, it is also flagged with a note ([Note 3]).
Material recovered from nested Pleistocene alluvial deposits stratigraphically beneath a 100,000-year-old soil profile: a 'rock ring' (not a fire hearth) dated to 135,000 years by thermoluminescence (TL), about 200,000 years by uranium-series analysis, and about 197,000+/- 20,000 years by surface beryllium-10 (10 Be) dating.
Construction at a high school uncovered millions of fossils dating back nearly 9 million years. The fossils include unique species of fish that had never been found in the area before.
[1] District of Columbia: Capitalsaurus is the state dinosaur of Washington D.C., but the District has not chosen a state fossil. Florida: There is no state fossil in Florida, though agatised coral, which is a fossil, is the state stone. Hawaii; Iowa: The crinoid was proposed in 2018. [2] Minnesota: The giant beaver was proposed in 2022. [3]
Turbidites in the Venado Sandstone (Great Valley Sequence) at Lake Berryessa, California.. The Great Valley Sequence of California is a 40,000-foot (12 km)-thick group of related geologic formations that are Late Jurassic through Cretaceous in age (150–65 Ma) on the geologic time scale.