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Amecystis is a Palaeozoic genus of rhombiferan echinoderm similar to Pleurocystites, lacking rhombs.[1]
| Amecystis | |
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| Fossil of Amecystis laevis at the Smithsonian National Museum of Natural History | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | †Rhombifera |
| Order: | †Dichoporita |
| Family: | †Pleurocystitidae |
| Genus: | †Amecystis |
References edit
- ^ Broadhead, Thomas W.; Strimple, Harrell L. (1975). "Respiration in a Vagrant Ordovician Cystoid, Amecystis". Paleobiology. 1 (3): 312–319. Bibcode:1975Pbio....1..312B. doi:10.1017/S0094837300002554. JSTOR 2400371. S2CID 130198270.
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