There are plenty of cases where a species has been described more than once by separate researchers. The first name always takes priority over any latter names (see text below the Brontosaurus image above for a classic example of this). For example, staghorn sumac, Rhus typhina, was first described by Linnaeus in 1756. I can’t quite parse out why, but the American botanist, George Bishop Sudworth, referred to it as Rhus hirta Sudw. in his book, Check List of the Forest Trees of the United States: Their Names and Ranges (link). The “Sudw.” refers to who named the species, so here Sudworth is noting that he named the species. You’ll see the older name sometimes written out in full as “R. typhina L.”, where “L.” is for Linnaeus.
Many older texts (and oddly in the 2015 book Vermont Forest Trees) referred to staghorn sumac as Rhus hirta. But regardless of whether Sudworth thought his sumac was a different species from Linnaeus’, it was later determined that the two species were just one and so the first published account and name take priority, and we’re left with R. typhina, not R. hirta.