Desmostylus hesperus Variante:Pintado a mano Liaoning Province

Liaoning Province

It was described in 2014

making it a key taxon for understanding the evolutionary transition from toothed cetaceans to toothless filter feeders

In addition to its distinctive claw

Snout-tail length 750 mm

Desmostylus hesperus Variante:Pintado a mano Liaoning ProvinceDesmostylus hesperus was a semi aquatic marine mammal from the Miocene belonging to Desmostylia, an extinct order of mammals known exclusively from the North Pacific. Unlike sirenians, pinnipeds or cetaceans, desmostylians represented a distinct evolutionary lineage that has completely disappeared. They have traditionally been associated with Tethytheria, the broader evolutionary group that includes sirenians and proboscideans. The generic name means