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Eolorica
''Eolorica'' is a fossilized loriciferan from the mid-Cambrian Deadwood Formation of Saskatchewan, Canada, preserved as a Small Carbonaceous Fossil Small carbonaceous fossils (SCFs) are sub-millimetric organic remains of organisms preserved in sedimentary strata. This category of fossils has traditionally included robust or thick-walled entities such as plant spores, acritarchs and chitinozoa ....Harvey, T. H. P. & Butterfield, N. J. Exceptionally preserved Cambrian loriciferans and the early animal invasion of the meiobenthos. Nat. Ecol. Evol. 1, 22 (2017). References {{Taxonbar, from=Q48996876, from2=Q106889334 Loricifera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loriciferan
Loricifera (from Latin, '' lorica'', corselet (armour) + ''ferre'', to bear) is a phylum of very small to microscopic marine cycloneuralian sediment-dwelling animals that had been determined to be 37 described species, in 9 genera, but in 2021 has increased to 43 species. Aside from these described species, there are approximately 100 more that have been collected and not yet described. Their sizes range from 100 μm to ca. 1 mm. They are characterised by a protective outer case called a lorica and their habitat is in the spaces between marine gravel to which they attach themselves. The phylum was discovered in 1983 by R.M. Kristensen, near Roscoff, France. They are among the most recently discovered groups of animals. They attach themselves quite firmly to the substrate, and hence remained undiscovered for so long. The first specimen was collected in the 1970s, and later described in 1983. They are found at all depths, in different sediment types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deadwood Formation
The Deadwood Formation is a geologic formation of the Williston Basin and Western Canada Sedimentary Basin. It is present in parts of North and South Dakota and Montana in the United States, and in parts of Alberta, Saskatchewan, and southwestern corner of Manitoba in Canada. It is of Late Cambrian to Early Ordovician age and was named for exposures in Whitewood Creek near Deadwood, South Dakota.Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol. 4, Western Canada including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba. Canadian Society of Petroleum Geologists, Calgary, 1423 p. on CD-ROM. . It is a significant aquifer in some areas, and its conglomerates yielded significant quantities of gold in the Black Hills of South Dakota. It preserves trace fossils such as ''Skolithos'', and remains of Late Cambrian trilobites and brachiopods, as well as Ordovician fossils. A 20 MW geothermal power plant is under construction, drilling 3.5 kilometers d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Carbonaceous Fossil
Small carbonaceous fossils (SCFs) are sub-millimetric organic remains of organisms preserved in sedimentary strata. This category of fossils has traditionally included robust or thick-walled entities such as plant spores, acritarchs and chitinozoa, but the term 'SCFs' is usually applied to more fragile remnants of animals that can only be extracted through a delicate maceration technique. SCFs are relatively widespread and abundant, and can potentially preserve both mineralized and non-mineralized parts of organisms. Since SCFs can preserve the remains of non-biomineralized organisms, they have been viewed as a relatively untapped record of animal evolution, which has the potential to circumvent some of the biases of the shelly fossil record. Extraction SCFs are typically preserved in fine-grained siliciclastic rocks, and are too small to be fruitfully examined on bedding planes. Instead, they are extracted by dissolving the rock in acid. Traditional palynological preparations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
