On the contrary, the absence of significant intra-individual differences in 14C age in most of the localities from arid environments (Africa, Arabic Peninsula) attests to the good preservation of bone apatite in these regions.
Although most Late Jurassic fossil localities come from relatively arid or semi-arid environments [31], there is a surprising amount of ecological variation that warrants further study.
Haouari and Ferchichi ([2009]) identified one hundred compounds in essential oils of subcultured A. herba-alba originated from different localities in sub-arid to Saharan domains of Tunisia.
In this study we used independent mitochondrial (ND2) and nuclear (RAG-1, C-mos, allozymes) loci to estimate specific and phylogenetic diversity within the nominal species ' Crenadactylus ocellatus' from localities spanning its wide range across arid and semi-arid Australia.
We performed ENMs using locality data of A. femoralis from eastern Australia and of A. femoralis from Western Australia, restricting background data to areas likely to be colonizable for the species as recommended by Phillips et al. [87] Therefore, we manually delimited areas encompassing the known localities, separating them from completely arid areas away from the coast (Fig. S1).
However, the actual duration of arid conditions and their disparate effect in particular localities are still under discussion.
For example, Quan et al. (2012) examined 66 plant assemblages at 37 localities in China and found that the arid zone proposed in earlier studies experienced relatively high mean annual precipitation of >735 mm.
Water leach studies were carried out on mine waste calcine samples collected from several localities because the study area is in an arid desert climate with little annual precipitation.
This phenomenon takes place, for example, among birds of the arid zones of Australia, where ducks, parrakeets, and seedeaters appear in a locality following infrequent and unpredictable rains, breed, and then move to other areas.
