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The Maotianshan shale is a lower Cambrian (Atdabanian) rock formation, of ca 522 Mya, now lying exposed in the Yunnan Province of China in the villages of Ercaicun and Chengjiang near the city of Kunming. Nearly 50 meters of mudstone sedimentary strata are exposed, revealing many excellently-preserved soft-bodied fossilized organisms, which form a major Lagerstätte, "probably the most significant exceptional preservation above the Precambrian-Cambrian boundary (c. 543 Ma)" [1]. At the time these sediments were laid down, this section of the Yangtze plateau lay in an equatorial zone. Some brachiopods that are found in situ and the gut contents of some mud-ingesting animals both indicate a warm, shallow sea with a muddy bottom. The Cambrian is a major division of the geologic timescale that begins about 542 Ma (million years ago) at the end of the Proterozoic eon and ended about 488. ...
The Atdabanian period of the Early Cambrian epoch lasted from ca 530 to ca 524 Mya. ...
In astronomy, geology, and paleontology, mya is an acronym for million years ago and is used as a unit of time to denote length of time before the present. ...
Yunnan (Simplified Chinese: 云å—; Traditional Chinese: 雲å—; Hanyu pinyin: ) is a province of the Peoples Republic of China, located in the far southwestern corner of the country. ...
Kunming (Chinese: 昆明; Hanyu Pinyin: ; Wade-Giles: Kun-ming) is the capital of Yunnan province, China with a population estimated on 1,055. ...
Mudstone is a fine-grained sedimentary rock whose original constituents were clays or muds. ...
Lagerstätten (German; singular Lagerstätte; literally place of storage, resting place) are sedimentary deposits that exhibit extraordinary fossil richness or completeness. ...
These shales were discovered around 1984 by Xianguang Hou, and have been extensively studied by both Chinese and Western paleontologists. The shales contain a very broad and well-preserved fauna including many of the taxa found in the better known, and substantially younger, Burgess Shale of British Columbia, as well as the somewhat younger Emu Bay shale of South Australia. The fauna is often referred to as "the Chengjiang biota". Shale Shale is a fine-grained sedimentary rock whose original constituents were clays or muds. ...
A paleontologist carefully chips rock from a column of dinosaur vertebrae. ...
Fauna is a collective term for animal life. ...
A taxon (plural taxa) is an element of a taxonomy, e. ...
The Burgess Shale (named after Mount Burgess, close to where the Shale was found) is a black shale exposure found high up in the Canadian Rockies in Yoho National Park near the town of Field, British Columbia. ...
Motto: Splendor Sine Occasu (Latin: Splendour without diminishment) Official languages none stated in law; English is de facto Capital Victoria Largest city Vancouver Lieutenant-Governor Iona Campagnolo Premier Gordon Campbell (BC Liberal) Parliamentary representation - House seat - Senate seats 36 6 Area Total • Land • Water (% of total) Ranked 5th 944,735...
North Coast of Kangaroo Island, Emu Bay © David Simpson The Emu Bay shale formation is one of two major Konservat-Lagerstätten (fossil beds with soft tissue preservation) in the world containing fossilised Redlichiida, an order of trilobite. ...
Motto: United for the Common Wealth Nickname: Festival State Other Australian states and territories Capital Adelaide Government Governor Premier Const. ...
In addition to Anomalocaris, Opabinia, Hallucigenia, and other spectacular forms familiar from the Burgess shales, the Maotianshan shales include at least four possible types of chordates, two of which appear to be true fishes. See Haikouella, Haikouichthys, Yunnanozooan, Myllokunmingia. A diversity of more familiar forms such as trilobites, brachiopods, and sponges are also present. Subphyla and Classes Anomalocaridae - Anomalocarids, extinct Genus Anomalocaris Genus Laggania Genus Parapeytoia Opabinidae - Extinct Genus Opabinia Unclassified anomalocarid-like specimens Genus Kerygmachela Genus Pambdelurion Anomalocarids (meaning odd shrimp) are a group of very early marine animals known from fossils found in Cambrian deposits in China, North America, and Australia. ...
Opabinia is a curious animal found in early Cambrian fossil deposits. ...
Hallucigenia is an extinct animal genus found as fossils in the Middle Cambrian-aged Burgess Shale formation of British Columbia, Canada. ...
The Burgess Shale (named after Mount Burgess, close to where the Shale was found) is a black shale exposure found high up in the Canadian Rockies in Yoho National Park near the town of Field, British Columbia. ...
Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with...
Atlantic herring, Clupea harengus: one of the most abundant species of fish in the world. ...
The Haikouella is a probable chordate from the Lower Cambrian beds of Xiangchiang in Yunnan, China. ...
The Haikouichthys is a primitive fish-like animal from the Lower Cambrian Maotianshan shales of China. ...
The Yunnanozooan is a suspected chordate or hemichordate from the Lower Cambrian beds of Xiangchiang in Yunnan province, China. ...
The Myllokummingia is a primitive, probably agnathid (jawless) fish from the Lower Cambrian Maotianshan shales of China thought to be a vertebrate (see external links). ...
Orders Agnostida Redlichiida Corynexochida Lichida Phacopida Proetida Asaphida Harpetida Ptychopariida doubtful order Nektaspida Trilobites are extinct arthropods in the class Trilobita. ...
Classes Lingulata Paterinata (extinct) Craniforma Chileata (extinct) Obolellata (extinct) Kutorginata (extinct) Strophomenata (extinct) Rhynchonellata Brachiopods (from Latin bracchium, arm + New Latin -poda, foot) make up one of the major animal phyla, Brachiopoda. ...
The sponge, in the phylum Porifera, is a very primitive and specialized animal. ...
The Maotianshan shales provide even stronger evidence than does the Burgess shale for a Cambrian Explosion wherein a large number of very different animal body plans seem to have appeared in a disconcertingly short time interval. The Cambrian explosion refers to the geologically sudden appearance of complex multi-cellular macroscopic organisms between roughly 542 and 530 million years ago (mya). ...
Fossil Species
Arthropods - Acanthomeridion
- Anomalocaris
- Canadaspis
- Chengjiangocaris
- Chuandianella
- Cindarella
- Eoredlichia, a trilobite
- Fortiforceps
- Fuxianhuia
- Isoxys
- Jianfengia
- Kuamaia
- Kuanyangia, a trilobite
- Leanchoilia
- Misszhouia
- Naraoia
- Primicaris
- Retifacies
- Saperion
- Sinoburius
- Skioldia
- Squamacula
- Xandarella
- Yunnanocephalus, a trilobite
Subphyla and Classes Anomalocaridae - Anomalocarids, extinct Genus Anomalocaris Genus Laggania Genus Parapeytoia Opabinidae - Extinct Genus Opabinia Unclassified anomalocarid-like specimens Genus Kerygmachela Genus Pambdelurion Anomalocarids (meaning odd shrimp) are a group of very early marine animals known from fossils found in Cambrian deposits in China, North America, and Australia. ...
Canadaspis was a benthic feeder that moved mainly by walking and dug in the mud in search of its food. ...
Orders Agnostida Redlichiida Corynexochida Lichida Phacopida Proetida Asaphida Harpetida Ptychopariida doubtful order Nektaspida Trilobites are extinct arthropods in the class Trilobita. ...
Orders Agnostida Redlichiida Corynexochida Lichida Phacopida Proetida Asaphida Harpetida Ptychopariida doubtful order Nektaspida Trilobites are extinct arthropods in the class Trilobita. ...
Orders Agnostida Redlichiida Corynexochida Lichida Phacopida Proetida Asaphida Harpetida Ptychopariida doubtful order Nektaspida Trilobites are extinct arthropods in the class Trilobita. ...
dorfs afggnd relatives - Hallucigenic
- Microdsfgictyon
- Palaedddoscolex
Chordates The Haikouella is a probable chordate from the Lower Cambrian beds of Xiangchiang in Yunnan, China. ...
The Haikouichthys is a primitive fish-like animal from the Lower Cambrian Maotianshan shales of China. ...
The Myllokummingia is a primitive, probably agnathid (jawless) fish from the Lower Cambrian Maotianshan shales of China thought to be a vertebrate (see external links). ...
The Yunnanozooan is a suspected chordate or hemichordate from the Lower Cambrian beds of Xiangchiang in Yunnan province, China. ...
Others Opabinia is a curious animal found in early Cambrian fossil deposits. ...
The genus Xidazoon was erected by Shu, et. ...
See also Lagerstätten (German, singular: Lagerstätte, literally: place(s) of storage or resting place(s)) are sedimentary deposits that exhibit extraordinary fossil richness or completeness. ...
China stretches some 5,000 kilometers across the East Asian landmass in an erratically changing configuration of broad plains, expansive deserts, and lofty mountain ranges, including vast areas of inhospitable terrain. ...
This article is in need of attention. ...
Wonderful Life is a book on evolution by Stephen Jay Gould. ...
References - (2003). Fossil Lagerstätten. (Web page) Department of Earth Sciences, University of Bristol. URL accessed on November 21, 2005. - A catalogue of sites of exceptional fossil preservation produced by MSc palaeobiology students at University of Bristol's Department of Earth Sciences.
- Chengjiang. (Web page) URL accessed on November 22, 2005.
- Hou, Xian-Guang; Richard J. Aldridge, Jan Bergstrom, David J. Siveter, Derek J. Siveter, Xiang-Hong Feng (2004). The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life, Blackwell Publishers. ISBN 1405106735.
- Chen, J. Y.; Zhou, G. Q., Zhu, M. Y. and Yeh, K. Y. (1997). The Chengjiang Biota - A Unique Window of the Cambrian Explosion. ISBN 9578503474.
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