Desmostylus hesperus Variante:Pintado a mano and slightly serrated

and slightly serrated

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

Liaoning Province

Snout-tail length 750 mm

Desmostylus hesperus Variante:Pintado a mano and slightly serratedDesmostylus 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