Cueva de Abra
Basic information
Sample name: Cueva de Abra

Reference: W. W. Dalquest and E. Roth. 1970. Late Pleistocene mammals from a cave in Tamaulipas, Mexico. Southwestern Naturalist 15(2):217-230 [ER 3201]
Country: Mexico
State: Tamaulipas

Coordinate: 22° 33' N, 99° 5' W
Basis of coordinate: based on nearby landmark
Geography comments: "a large cave in a limestone hill beside the Pan American Highway in extreme southern Tamaulipas", presumably near Antiguo Morelos Municipality (basis of coordinate)
"We assign these fossils to the late Pleistocene"
Climate and habitat
Lithology: limestone
Taphonomic context: bird accumulation, cave
Habitat comments: slabs of "buff-colored travertine" found at the bottom of a sinkhole
the authors infer that "regurgitated pellets of the barn owls (Tyto alba), that perched on the boulder above, disintegrated to scatter the bones of small vertebrates upon which the owls had fed"
Life forms: bats, rodents, other small mammals
Sampling methods: quarry
Sample size: 2013
Sampled by: 1966
Sampling comments: "the matrix slabs were treated with dilute acetic acid... most specimens were obtained by completely dissolving away the enclosing carbonate matrix"
Sample: 3511
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-09-10 17:34:44
Modified: 2019-09-10 17:34:44
Abundance distribution
25 species
7 singletons
total count 2013
standardised richness: not computable
Fisher's α: 4.021
geometric series k: 0.7499
Hurlbert's PIE: 0.7219
Shannon's H: 1.8746
Good's u: 0.9965