期刊
HISTORICAL BIOLOGY
卷 24, 期 5, 页码 557-565出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/08912963.2012.657633
关键词
lingulate; brachiopod; epithelial cell imprints or moulds; preservation
资金
- Paleontological Association Sylvester Bradley award
The preservation of polygonal imprints of epithelial cells in acrotretoid brachiopods is reviewed and supplemented by new data from the Cambrian of southern Great Britain. The imprints are confirmed as representing moulds of epithelial cells rather than an artefact of microstructure or preserved soft tissues, as they are (1) recorded in most taxa reviewed, (2) best preserved in areas where the shell has been thickened and (3) similar in size to cells recorded in Lingula, the closest living relative to the now extinct acrotretoids. Analysis of the morphology and sizes of epithelial cell moulds demonstrates that there is no consistent relationship between cell width and valve size, and that epithelial cells are not a useful taxonomic character within this group.
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