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