A considerable disadvantage of intraspecific calibrations is that they will often produce date estimates with a larger degree of uncertainty than those made using external calibrations.
It also evaluated the effect of using the Oryzeae phytolith and associated cuticle fossils for the outgroup, which have been shown to produce date estimates that are incompatible with those from other data [ 9].
Molecular clock methods produce date estimates as ancient as 1,600 Mya [ 88] but the Bayesian relaxed molecular clock approach gives much younger dates of 872-1,127 mean(mean 983 Mya) [ 22] which overlaps with our estimate.
The doum palm and the palmyra palm provide wood for construction, while the palms of the Manga oasis produce dates.
Hewlett-Packard customers who fail to register their products and are unable to produce dated sales receipts will discover that the company dates warranties from the time a product was shipped from factory to retailer, effectively subtracting several months from some warranties.
About 55% of the country's 18m palm trees produce dates, in particular the Deglet Nour, which earned $27.6mm in exports last year, a micro-resource compared with oil and gas, which accounts for 90% of Algeria's export earnings, but one Algerians are very proud of.
The region produces date palms, other fruits (e.g., grapes), and vegetables (e.g., lettuce, carrots, tomatoes, cucumbers, and melons).
More generally, evolutionary relationships within the monocotyledonous species [ 32- 34] and in the Zingiberales in particular [ 35, 36], have produced date estimates for the divergence of the Musaceae (61-110 Myandand the genus Musa (51 Mya).
It is also an agricultural centre, producing dates, cereals, fruits, and vegetables.
The area produces dates, and there is a date-packing factory at Al-Badrashayn, near the west bank of the Nile.
Now of lesser importance, Ḥāʾil is primarily a regional market and oasis, producing dates, fruit, and grain.
