| Ptychodera | |
|---|---|
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| |
| Ptychodera flava | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | Enteropneusta |
| Order: | Enteropneusta |
| Family: | Ptychoderidae |
| Genus: | Ptychodera |
| Species | |
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See text. | |
Ptychodera is a genus of acorn worm.