Panthera zdanskyi is a species of extinct big cat that roamed the earth millions of years ago. While there may not be any direct synonyms for the name of this species, there are related terms that could be used to describe it. For example, Panthera is the genus name for all big cats, and zdanskyi refers to a specific member of that genus. Therefore, one could use synonyms for "big cat" or "Panthera" to describe Panthera zdanskyi, such as "feline predator" or "wild cat." Additionally, one could describe the physical characteristics of the species, such as "saber-toothed tiger" or "prehistoric lion".