Desmostylus hesperus Variante:Pintado a mano It was described in 2014

It was described in 2014

Width 154 mm

Liaoning Province

This interpretation is consistent with the evolutionary position of alvarezsaurids among bird-related theropods and with the broader evidence of feather-like integument in numerous maniraptorans

and slightly serrated

Desmostylus hesperus Variante:Pintado a mano It was described in 2014Desmostylus 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