Eiffeliidae
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| Eiffeliidae | |
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| Artist reconstruction of Petaloptyon danei | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Informal group: | †"Heteractinida" |
| Family: | †Eiffeliidae Rigby, 1986 |
| Genera | |
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