The Coelosclerithophorans are a polyphyletic group of organisms bearing hollow sclerites made of aragonite, and with a supposedly distinctive microstructure. Their skeletons may be homologous to those of the molluscs, and Halkieria looks very much like a polyplacophoran. The shells of this group and the molluscs appear to have originated in the same fashion. However, there are several reasons to doubt this relationship, many of which may not pass muster. These are common constituents of Lower Cambrian small shelly fossil assemblages.
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| - Coeloscleritophora (de)
- Coeloscleritophoran (en)
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| - Die Coeloscleritophora sind eine ausgestorbene möglicherweise polyphyletische Klasse des Tierreichs, die während des Kambriums lebte. Ihre taxonomische Stellung ist umstritten. (de)
- The Coelosclerithophorans are a polyphyletic group of organisms bearing hollow sclerites made of aragonite, and with a supposedly distinctive microstructure. Their skeletons may be homologous to those of the molluscs, and Halkieria looks very much like a polyplacophoran. The shells of this group and the molluscs appear to have originated in the same fashion. However, there are several reasons to doubt this relationship, many of which may not pass muster. These are common constituents of Lower Cambrian small shelly fossil assemblages. (en)
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| - The Coelosclerithophorans are a polyphyletic group of organisms bearing hollow sclerites made of aragonite, and with a supposedly distinctive microstructure. Their skeletons may be homologous to those of the molluscs, and Halkieria looks very much like a polyplacophoran. The shells of this group and the molluscs appear to have originated in the same fashion. However, there are several reasons to doubt this relationship, many of which may not pass muster. There are two groups within the coeloscleritophorans: the , to which Halkieria and Wiwaxia belong, and the Chancellorids. The Ediacaran fossil Ausia has been touted as an ancestral 'intermediate' between both of these groups. These are common constituents of Lower Cambrian small shelly fossil assemblages. (en)
- Die Coeloscleritophora sind eine ausgestorbene möglicherweise polyphyletische Klasse des Tierreichs, die während des Kambriums lebte. Ihre taxonomische Stellung ist umstritten. (de)
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| - *Halkieriids
*Chancellorids (en)
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