Cotyledion
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Cotyledion Temporal range: Cambrian Stage 3 |
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| Scientific classification | |
| Kingdom: | Animalia |
| Genus: | †Cotyledion |
| Species: | †C. tylodes |
| Binomial name | |
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Cotyledion tylodes |
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Cotyledion tylodes is an extinct, stalked filter-feeder known from the Chengjiang lagerstatten. The living animal reached a couple of centimetres in height, and bore a loose scleritome of ovoid sclerites. Its interpretation has been controversial, and it has been previously identified as a carpoid echinoderm, or as a stem group echinoderm.C. tylodes is now classified as a stem group entoprocta based on new fossils that clearly show a U-shaped gut and a crown of tentacles, .
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