Relative Abundance Of Tremarctine Bears Vs. Ursus

[MarkGelbart]

In Additions to the Pleistocene Mammal Faunas of South Carolina, the author, Albert Sanders states that tremarctine bears (the lesser short-faced bears and the Florida spectacled bears) outnumber black bears by a wide margin in the fossil record of Florida and South Carolina.

However, while researching my book, I see only one tremarctine bear fossil (a cheekbone of the spectacled bear)has been discovered in Georgia compared with dozens of black bear fossils. This kind of contradicts what he wrote. It could be most of the Pleistocene deposits in South Carolina are much older than those from Georgia and tremarctine bears were more common earlier in the Pleistocene, but it seems like fossils from Florida would have a wide temporal range.

Anyway, what's the experience of fossil hunters here. Which is more abundant?