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[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 and skeletons. In all, roughly 21 species of Cambrian invertebrates have been discovered in the area. [4]
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 ...
Fossils of the mysterious Ediacaran organism Aspidella †Aspidella – tentative report †Aspidella terranovica †Atrypa †Atrypa reticularis †Aviculopecten †Aviculopecten occidentalis – or unidentified comparable form †Bimuria †Bolbolenellus †Bristolia †Bumastus †Calymene †Camarotoechia – tentative report †Carolinites ...
The fossils include unique species of fish that had never been found in the area before. The discovery is reshaping views on California geology with the possibility of extinct islands.
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Index fossils must have a short vertical range, wide geographic distribution and rapid evolutionary trends. Another term, "zone fossil", is used when the fossil has all the characters stated above except wide geographical distribution; thus, they correlate the surrounding rock to a biozone rather than a specific time period.
The Santa Susana Formation is a Paleogene period geologic formation in the Simi Hills and western Santa Susana Mountains of southern California. [1] [2] [3] The formation consists largely of light-gray shale and some fine-grained shaly sandstone, with a lens of heavy conglomerates in the lower part. [1] [4] Small beds of limestone are also ...
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