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Bradoriid
Bradoriids are an extinct order of small marine arthropods with a bivalved carapace, and were globally distributed, forming a significant portion of the Cambrian and Early Ordovician soft-bodied communities. Affinity Whilst the Bradoriida were traditionally considered as relatives of the modern bivalved arthropod group Ostracoda, the anatomy of their appendages does not support such a relationship; neither are they related to the Cambrian bivalved arthropod group Phosphatocopida. Rather, they are most probably related to the Eucrustacea Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group c ... at a stem-group level. An in-depth phylogenetic analysis of Panarthropoda included two bradoriid genera, '' Kunyangella'' and '' Kunmingella'', and recovered them as the most basal stem- ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongolitubulus
''Mongolitubulus'' is a form genus encapsulating a range of ornamented conical small shelly fossils of the Cambrian period. It is potentially synonymous with ''Rushtonites'', ''Tubuterium'' and certain species of ''Rhombocorniculum'', and owing to the similarity of the genera, they are all dealt with herein. Organisms that bore ''Mongolitubulus''-like projections include trilobites, bradoriid arthropods and hallucigeniid lobopodians. Morphology The fossils consist of round, slender, pointed, spines with a slight curvature, and are covered with short rhomboid processes that spiral around the spine surface, forming a regular mosaic with a 60° angle of intersection. Spines vary from sub-millimetric up to two centimetres in length, but do not show any growth lines, suggesting that they were moulted and replaced. Species are defined on the basis of the ornamentation, which may of course be convergent. Spines of ''Rhombocorniculum cancellatum'' have a similar surface ornamentation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunmingella
''Kunmingella'' is genus of Cambrian bradoriid from the Chengjiang biota, containing the single species ''K. douvillei''. See also * Arthropod * Cambrian explosion * Chengjiang biota ** List of Chengjiang Biota species by phylum References Cambrian animals Maotianshan shales fossils Prehistoric arthropod genera {{paleo-arthropod-stub Cambrian genus extinctions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comptaluta
''Comptaluta'' is an extinct genus of Cambrian bradoriid arthropod that is a member of the Chengjiang biota. Two species have been described: ''C. kailiensis'' and ''C. inflata''. See also * Arthropod * Cambrian explosion * Chengjiang biota The Maotianshan Shales are a series of Early Cambrian deposits in the Chiungchussu Formation, famous for their '' Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or traces. The Maotianshan Shales ... ** List of Chengjiang Biota species by phylum References Cambrian animals Maotianshan shales fossils Prehistoric arthropod genera {{paleo-arthropod-stub Cambrian genus extinctions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liangshanella
''Liangshanella'' is a genus of Cambrian bradoriid known from the Chengjiang biota and Burgess Shale. 6263 specimens of ''Liangshanella'' are known from the Greater Phyllopod bed, where they comprise 11.9% of the community. See also * Cambrian explosion The Cambrian explosion, Cambrian radiation, Cambrian diversification, or the Biological Big Bang refers to an interval of time approximately in the Cambrian Period when practically all major animal phyla started appearing in the fossil recor ... * List of Chengjiang Biota species by phylum References External links * Burgess Shale fossils Cambrian arthropods Maotianshan shales fossils Cambrian genus extinctions {{paleo-arthropod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maotianshan Shales
The Maotianshan Shales are a series of Early Cambrian deposits in the Chiungchussu Formation, famous for their '' Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or traces. The Maotianshan Shales form one of some forty Cambrian fossil locations worldwide exhibiting exquisite preservation of rarely preserved, non-mineralized soft tissue, comparable to the fossils of the Burgess Shale. They take their name from Maotianshan Hill (, Literal meaning: Hat Sky Mountain) in Chengjiang County, Yunnan Province, China. The most famous assemblage of organisms are referred to as the Chengjiang biota for the multiple scattered fossil sites in Chengjiang. The age of the Chengjiang Lagerstätte is locally termed Qiongzhusian, a stage correlated to the late Atdabanian Stage in Siberian sequences of the middle of the Early Cambrian. The shales date to ≤. The shales also contain the slightly younger Guanshan biota from Malong District in Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds ( taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indiana (genus)
Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th state on December 11, 1816. It is bordered by Lake Michigan to the northwest, Michigan to the north and northeast, Ohio to the east, the Ohio River and Kentucky to the south and southeast, and the Wabash River and Illinois to the west. Various indigenous peoples inhabited what would become Indiana for thousands of years, some of whom the U.S. government expelled between 1800 and 1836. Indiana received its name because the state was largely possessed by native tribes even after it was granted statehood. Since then, settlement patterns in Indiana have reflected regional cultural segmentation present in the Eastern United States; the state's northernmost tier was settled primarily by people from New England and New York, Central Indiana by mig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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