However, we have never recorded these fracture patterns on proboscidean limb bones that are listed as being from the Irvingtonian
The ground sloth Megalonyx (xenarthra: megalonychidae) from the Pleistocene (late Irvingtonian
) Camelot local fauna, Dorchester County, South Carolina.
All the bones have been dated to the Irvingtonian
period, which spanned 1.8 million to 300,000 years ago.
If this scenario is correct, then perhaps the specimen dates back to earlier Irvingtonian
times corresponding with both the "smallish" armadillo scute from the Slaton Quarry (see Dalquest & Schultz 1992), and reflecting the temporal size trend for D.
The Gila monster may have been widely distributed in the Mojave and Colorado Deserts around this time as Pleistocene (Rancholabrean) fossils are known from Gypsum Cave in Clark County, Nevada (Brattstrom 1954), and a late Irvingtonian
fossil of Heloderrna spp.
The early Pleistocene (latest Blancan-earliest Irvingtonian
) Froman Ferry fauna and history of the Glenns Ferry Formation, southwestern Idaho.
Reppening, C.A., Weasma, T.R., and Scott, G.R., 1994, The early Pleistocene (latest Blancan-earliest Irvingtonian
) Froman Ferry fauna and history of the Glenns Ferry Formation, southwestern Idaho: U.S.
Kurten and Anderson (1980) reported at least 20 sites from across North America, including several that are late Irvingtonian
in age although most are Rancholabrean.
Aztlanolagus (Lagomorpha: Leporidae) is currently considered a monotypic genus from the Irvingtonian
Remains of Cuvieronius have been collected from the bottom of the lake and could represent the Irvingtonian
NALMA (early Pleistocene).