Claims
| Claim | Type | Assessment | Score | Review checks | References |
|---|---|---|---|---|---|
| Dongoconodon platycauda had expanded feet resembling webbed platypus feet and a flattened tapering tail interpreted as adaptations for swimming and steering. | OBSERVATIONAL | Supported | 0.9734 | 0 of 4 | 180 |
| Dongoconodon platycauda, an approximately 125-million-year-old Early Cretaceous mammal from China, is the earliest confirmed swimming mammal discovered to date. | HISTORICAL | Supported | 0.8581 | 0 of 4 | 185 |