Irvingtonian

Irvingtonian

[‚ər·viŋ′tō·nē·ən]
(geology)
A stage of geologic time in southern California, in the lower Pleistocene, below the Rancholabrean.
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References in periodicals archive ?
The Blancan, Irvingtonian, and Rancholabrean Mammal Ages.
2003: Mammalian biochronology of Blancan and Irvingtonian (Pliocene and early Pleistocene) faunas from New Mexico.
All the bones have been dated to the Irvingtonian period, which spanned 1.
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.
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 NALMA.
4 million years to a period known as the Irvingtonian North American Land Mammal Age.
Remains of Cuvieronius have been collected from the bottom of the lake and could represent the Irvingtonian NALMA (early Pleistocene).
1999: Biostratigraphy of Blancan and Irvingtonian Mammals in the Fish Creek-Vallecito Creek Section, Southern California, and a Review of the Blancan-Irvingtonian Boundary.
SCIENCE, POLITICS, THE PUBLIC AND PROTECTING CALIFORNIA'S COASTAL MARINE ECOSYSTEMS 12:20-1:20 LUNCH BREAK 143 1:20 A NEW IRVINGTONIAN LAND MAMMAL ASSEMBLAGE FROM THE SAUGUS FORMATION, MOORPARK, VENTURA COUNTY, CALIFORNIA.