منابع مشابه
Fossil embryos deep in the fossil record
Embryos have been found in ‘old’ rocks on four continents, especially in Siberia, Nevada, Australia and China. They have been discovered in sedimentary rocks of even Late Neoproterozoic age, assuming the evolutionary geological column1 (figure 1). The Neoproterozoic is the period, so called, between 1 billion and 550 million years ago. This discovery was in the Doushantuo Formation, Guizhou Pro...
متن کاملNew evidence on fossil man in China.
Reports Chemical Mating Attractants in the Queen Honey Bee: N. E. Gary .... ............ 773 Effect of Monochromatic Rearing on the Control of Responding by Wavelength: N. Peterson .774 Parotoid Secretions of Indonesian Toads: F. G. Henderson, J. S. Welles, K. K. Chen ... 775 Detection of Aspergillus flavus in soil by Immunofluorescent Staining: E. L. Schmidt and R. 0. Bankole .776 Serotonin-li...
متن کاملOn the Precursors of Fossil Groups
We compare the absolute magnitudes in the K-band of the brightest galaxies in clusters of Bautz-Morgan type I with those of the fossil group brightest galaxies. It is found that the brightest galaxies in fossil groups are on average fainter than the brightest galaxies in clusters. It is also shown that the brightness of the brightest galaxy depends on the cluster richness. It is concluded that ...
متن کاملFossil DNA
Also known as... ancient DNA. The New Shorter Oxford Dictionary offers the precise explanation of ‘ancient’ as ‘belonging or pertaining to the period before the fall of the Western Roman Empire in AD 476.’ DNA can be recovered from fossils much older than 1500 years, but the inevitable time-dependent decay of the DNA structure due to oxidation and hydrolysis makes retrieval increasingly difficu...
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ژورنال
عنوان ژورنال: Proceedings of the Zoological Society of London
سال: 2009
ISSN: 0370-2774
DOI: 10.1111/j.1096-3642.1874.tb02506.x