DOI:10.1666/06-130.1 - Corpus ID: 85619898
A Redescription of a Rare Chordate, Metaspriggina walcotti Simonetta and Insom, from the Burgess Shale (Middle Cambrian), British Columbia, Canada
@inproceedings{Morris2008ARO, title={A Redescription of a Rare Chordate, Metaspriggina walcotti Simonetta and Insom, from the Burgess Shale (Middle Cambrian), British Columbia, Canada}, author={Simon Conway Morris}, year={2008}, url={https://api.semanticscholar.org/CorpusID:85619898}}- S. Morris
- Published1 March 2008
- Geology, Biology
The relative abundance of agnathan hagfish and lamprey from the Chengjiang Lagerstatte, but near total absence from equivalent fossil deposits, raises important and related questions about the earliest history of the fish.
29 Citations
29 Citations
A new phyllopod bed-like assemblage from the Burgess Shale of the Canadian Rockies
The discovery of an extraordinary new soft-bodied fauna from the Burgess Shale is reported, and the presence of the stem arthropods Misszhouia and Primicaris, previously known only from the early Cambrian of China, suggests that the palaeogeographic ranges and longevity of Burgess Shales taxa may be underestimated.
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Biology, Geology
Proceedings of the Royal Society B: Biological…
The known diversity of Chengjiang deuterostomes are reviewed and it is argued that the vetulicolians and yunnanozoans represent very primitive deuterOSTomes, as well as new data to indicate that the yunncozoans are unlikely to be any sort of chordate.
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Geology, Biology
Phylogenetic analysis places Metaspriggina as a basal vertebrate, apparently close to the Chengjiang taxa Haikouichthys and Myllokunmingia, demonstrating also that this primitive group of fish was cosmopolitan during Lower–Middle Cambrian times.
The soft-bodied biota of the Cambrian Series 2 Parker Quarry Lagerstätte of northwestern Vermont, USA
Abstract. A non-biomineralized arthropod, Protocaris marshi, was described from the lower Cambrian (Dyeran Series 2, Stage 4) of Parker's Cobble in northwestern Vermont in 1884. It represents the…
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Biology, Geology
The Middle Cambrian Pikaia gracilens (Walcott) has an iconic position as a Cambrian chordate, but until now no detailed description has been available and its relationships to both extant and extinct chordates and other deuterostomes are explored.
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Biology, Geology
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Biology, Geology
In the aggregate, modern data from molecular biology, palaeontology, and comparative embryology/morphology, having been revitalized by the introduction of new microscopy techniques, imply that the hypothesized planktotrophic gastrae-like common ancestor is the least likely of the diverse suggestions on the origins of the Metazoa.
A long-headed Cambrian soft-bodied vertebrate from the American Great Basin region
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Nuucichthys is described, tentatively reconstructed, as a pelagic organism with limited swimming abilities (planktonektic) from the American Great Basin, a region home to a dozen Cambrian Konservat-Lagerstätten vertebrates.
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Phylogenetic analysis indicates that Haikouichthys somewhat resembles the ammocoete larva of modern lampreys, this is because of shared general craniate characters; adult lampreys and hagfishes (the cyclostomes if monophyletic) are probably derived in many respects.
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ABSTRACT Discoveries, most of them recently, in more than thirty Lower and Middle Cambrian horizons with soft-bodied fossils have shown that forty-one of the genera occur also in the celebrated…
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Odontogriphus omalus is interpreted to be members of an early stem-group mollusc lineage that probably originated in the Neoproterozoic Ediacaran Period, providing support for the retention of a biomat-based grazing community from the late Precambrian Period until at least the Middle Cambrian.
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Biology
Proceedings of the Royal Society of London…
The discovery of a new agnathan specimen from the Lower Cambrian Chengjiang Lagerstätte of China is reported and new evidence is provided on the myomeres, the branchial apparatus, the dorsal fin and the gonads of the earliest vertebrates.
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