Duchesneodus is a large brontothere endemic to North America. It lived during the Late Eocene 40.4—37.2 mya, existing for approximately . The skeletal characteristic of the mammal was defined by the dome size that was sexually in two distinct forms. The females had a lower but prominent dome while the males had larger domes. Several species of Duchesneodus have been named historically, though only one is recognized as valid today, D. uintensis.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).