Comment on "Ultrastructure reveals ancestral vertebrate pharyngeal skeleton in yunnanozoans".
editorial · Level V
Where this comes from
- Record sourced from PubMed, PMID 37498997.
- Also identified by DOI 10.1126/science.adf1472.
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Abstract
Tian <i>et al</i>. (Reports, 8 July 2022, p. 218) claim that Cambrian yunnanozoan animals are stem vertebrates, based partly on their observation at the nanometer scale of microfibrillar tissue located in the branchial arches. They interpret this to represent cellular cartilage with an extracellular matrix of microfibrils. Instead, we argue that the 'microfibrils' are more likely modern organic contamination.
Medical subject headings
- Cartilage
- Pharynx
- Vertebrates
- Fossils