Deciphering the early evolution of echinoderms with Cambrian fossils
نویسندگان
چکیده
منابع مشابه
Stereom microstructures of Cambrian echinoderms revealed by cathodoluminescence (CL)
Echinoderms possess a skeleton with a unique and distinctive meshlike microstructure called stereom that is underpinned by a specific family of genes. Stereom is thus considered the major echinoderm synapomorphy and is recognized already in some Cambrian echinoderm clades. However, data on the skeletal microstructures of early echinoderms are still sparse and come only from isolated ossicles of...
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15 صفحه اولTrace fossils and substrates of the terminal Proterozoic-Cambrian transition: implications for the record of early bilaterians and sediment mixing.
The trace fossil record is important in determining the timing of the appearance of bilaterian animals. A conservative estimate puts this time at approximately equal 555 million years ago. The preservational potential of traces made close to the sediment-water interface is crucial to detecting early benthic activity. Our studies on earliest Cambrian sediments suggest that shallow tiers were pre...
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ژورنال
عنوان ژورنال: Palaeontology
سال: 2014
ISSN: 0031-0239
DOI: 10.1111/pala.12138