Mucrospirifer mucronatus
| Mucrospirifer mucronatus Temporal range:  | |
|---|---|
| A Mucrospirifer mucronatus from the Windom shale. | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Brachiopoda | 
| Class: | Rhynchonellata | 
| Order: | †Spiriferida | 
| Family: | †Mucrospiriferidae | 
| Genus: | †Mucrospirifer | 
| Species: | †M. mucronatus | 
| Binomial name | |
| †Mucrospirifer mucronatus Conrad, 1841 | |
Mucrospirifer mucronatus is a species of articulate brachiopod from the middle Devonian. The species serves as an index fossil for the middle Devonian.