Macrosemimimus
| Macrosemimimus Temporal range: Late Jurassic | |
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| Fossil | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Clade: | Ginglymodi | 
| Order: | †Semionotiformes | 
| Genus: | †Macrosemimimus Schröder et al., 2012 | 
| Species | |
| Synonyms | |
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Macrosemimimus is an extinct genus of semionotiform ray-finned fish from the Late Jurassic of Germany, England and France.