The Cambrian fossil Pikaia, and the origin of chordate somites
Abstract The Middle Cambrian fossil Pikaia has a regular series of vertical bands that, assuming chordate affinities, can be interpreted as septa positioned between serial myotomes. Whether Pikaia has a notochord and nerve cord is less certain, as the dorsal organ, which has no obvious counterpart i...
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| Format: | Article |
| Language: | English |
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BMC
2024-02-01
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| Series: | EvoDevo |
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| Online Access: | https://doi.org/10.1186/s13227-024-00222-6 |