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Parakunmingella
This is a list of fossils found at Maotianshan Shales, whose most famous assemblage of organisms are referred to as the Chengjiang biota. The Maotianshan Shales are a series of Cambrian, Early Cambrian Shale, sedimentary deposits in the Chiungchussu Formation, famous for their ''Lagerstätte, Konservat Lagerstätten'', deposits known for the exceptional preservation of fossilized organisms or Trace fossil, 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 of British Columbia, Canada. Ecdysozoa Scalidophora Palaeoscolecid, Palaeoscolecidomorpha Priapulida Panarthropoda Lobopodia = Eoconchariidae = = Hallucishaniida, Hallucishaniids = = Lobopodia#Siberion_and_similar_taxa, Siberiidae = = Lobopodia#Gilled_lobopodians, Gilled Lobopodians = Radiodonta Radiodonta are a group of highly su ... [...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] |
Palaeoscolecid
The palaeoscolecids are a group of extinct ecdysozoan worms resembling armoured priapulids. They are known from the Lower Cambrian to the late Silurian; they are mainly found as disarticulated sclerites, but are also preserved in many of the Cambrian lagerstätten. They take their name from the typifying genus '' Palaeoscolex''. Other genera include '' Cricocosmia'' from the Lower Cambrian Chengjiang biota. Morphology Palaeoscolecids bear an annulated trunk ornamented with circular patterns of phosphatic tesselating plates; a layered cuticle; and an armoured proboscis. They are long and narrow, and can reach tens of centimetres in length. Their cuticle is annulated, typically in complete rings, but sometimes the rings split or only encircle part of the trunk. Each annulus is essentially identical to its neighbours; the only trunk differentiation is at the anterior and posterior. The anterior is radially symmetrical, typically comprising an introvert, whereas the trunk is bil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraselkirkia
''Paraselkirkia'' is a genus of archaeopriapulid known from the 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 ..., resembling '' Selkirkia''. References Prehistoric protostome genera Priapulida Cambrian genus extinctions {{Cambrian-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyolitha
Hyoliths are animals with small conical shells, known as fossils from the Palaeozoic era. They are at least considered as lophotrochozoan, and possibly being lophophorates, a group which includes the brachiopods, while others consider them as being basal lophotrochozoans, or even molluscs. Morphology The shell of a hyolith is typically one to four centimeters in length, triangular or elliptical in cross section. Some species have rings or stripes. It comprises two parts: the main conical shell (previously referred to as a ‘conch’) and a cap-like operculum. Some also had two curved supports known as ''helens'' They are calcareous – probably aragonitic All of these structures grew by marginal accretion. Shell microstructure The orthothecid shell has an internal layer with a microstructure of transverse bundles, and an external layer comprising longitudinal bundles. Helens Some hyoliths had helens, long structures that taper as they coil gently in a logarithmic spira ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eximipriapulus
''Eximipriapulus'' is a genus of priapulid-like organisms, perhaps belonging to the crown group, known from the Chengjiang biota. Paleoecology Eximipriapulus is known to live inside Hyolith Hyoliths are animals with small conical surface, conical animal shell, shells, known as fossils from the Palaeozoic era. They are at least considered as lophotrochozoan, and possibly being lophophorates, a group which includes the brachiopods, w ... shells. It is also an active burrower and is carnivorous. References Priapulida Prehistoric protostome genera Cambrian China Fossils of China Fossil taxa described in 2014 {{paleo-protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeopriapulida
Archaeopriapulida is a group of priapulid-like worms known from Cambrian lagerstätte. The group is closely related to, and very similar to, the modern Priapulids. It is unclear whether it is mono- or polyphyletic. Despite a remarkable morphological similarity to their modern cousins, they fall outside of the priapulid crown group, which is not unambiguously represented in the fossil record until the Carboniferous. They are probably closely related or paraphyletic to the palaeoscolecids; the relationship between these basal worms is somewhat unresolved. Species * Genus '' Acosmia maotiania'' Chen & Zhoi 1997 (Chengjiang deposits) ** '' Acosmia maotiania'' Chen & Zhoi 1997 * Genus ''Archotuba'' Hou et al. 1999 (possibly a Cnidarian) (Chengjiang deposits) ** '' Archotuba conoidalis'' Hou et al. 1999 * Genus '' Baltiscalida'' Slater et al. 2017 ** '' Baltiscalida njorda'' Slater et al. 2017 * Genus '' Eopriapulites'' Liu & al 2014 ** ''Eopriapulites sphinx'' Liu & al 2014 * Genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynetis
''Corynetis'' is a genus of archaeopriapulid Archaeopriapulida is a group of priapulid-like worms known from Cambrian lagerstätte. The group is closely related to, and very similar to, the modern Priapulids. It is unclear whether it is mono- or polyphyletic. Despite a remarkable morphol ... known from the Chengjiang biota, and a senior synonym of ''Anningvermis multispinosus''. References Priapulida Prehistoric protostome genera Cambrian genus extinctions {{Cambrian-animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tabelliscolex
''Tabelliscolex'' is a genus of palaeoscolecid worm from the Early Cambrian 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 ... that comprises two species, ''T. hexagonus'' and ''T. maanshanensis''. References Prehistoric protostome genera Paleoscolecids {{palaeo-protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maotianshania Detail CRF 02
''Maotianshania cylindrica'' is an extinct worm-like creature of average size (up to long and wide). It occurs in the Lower Cambrian (Atdabanian) Chengjiang biota of Northeastern Yunnan, China. It is usually preserved as pink impression. The gut is a dark central zone. The anterior pharnyx and "collar", carry tiny sepia-colored teeth. The very back-end of the body has two small hooks. Etymology ''Maotianshania'' has been named for the Maotianshan shales, home to the famous Chengjiang Lagerstätte. Description The body of ''Maotianshania'' is worm-like, up to 4 cm in length and 2 mm wide, having 3-4 rings (or annuli) per mm. Like its relatives '' Cricocosmia'' and '' Palaeoscolex'', it is usually preserved as a very thin pink impression on the buff-colored matrix that is characteristic for the Maotianshan shales. The front of the body consists of a presumably protrusive and retractable elongate pharynx, armed with tooth- or spine-like outgrowths, arranged in rows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
