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Tropaeum Temporal range: Early Cretaceous |
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| Tropaeum imperator | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Family: | Ancyloceratidae |
| Genus: |
Tropaeum Sowerby, 1837 |
| Species | |
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Tropaeum ("Trophy") is an extinct genus of ammonites found throughout the oceans of the world during the Early Cretaceous. As with many other members of the family Ancyloceratidae, there was a trend among species within this genus to uncoil somewhat, in a very similar manner to the genus . The largest species, T. imperator of Australia, had a shell a little over one meter in diameter.