Species †C. tylodes | Genus †Cotyledion | |
Similar Vetulicola cuneata, Xianguangia, Acanthomeridion, Urokodia, Pectocaris | ||
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, .
References
Cotyledion Wikipedia(Text) CC BY-SA