Protomonaxonida
| Protomonaxonida Temporal range:   | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Porifera | 
| Class: | Demospongiae | 
| Order: | †Protomonaxonida Finks et al. 2004 | 
| Families | |
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Protomonaxonida is an extinct order of sea sponges. It is a paraphyletic group gathering the most ancient species from the Burgess Shale to modern sponges.