Is the fossil record adequate?
نویسندگان
چکیده
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...
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Asymmetry is a fundamental aspect of the biology of all organisms, and has a deep evolutionary history. The fossil record contains evidence of both morphological and behavioural asymmetries. Morphological asymmetry is most commonly expressed as conspicuous, directional asymmetry (either lateral asymmetry or spiral asymmetry) in body fossils. Few examples of fluctuating asymmetry, a form of subt...
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2.4 Cyanobacterial Fossils.................................................. 22 2.4.1 Filamentous Cyanobacteria ............................................ 22 2.4.1.1 Oscillatoriaceae .............................................................. 22 2.4.1.2 Nostocaceae .................................................................... 24 2.4.2 Coccoid and Ellipsoid Cyanobacteria ...............
متن کاملIs Hesaabdaaree an Adequate Equivalent for Accounting?
Some of the difficulties and misunderstandings that happen in accounting theory, practice, regulation and education are grounded in language and linguistics. As an illustration of this the Persian equivalent of 'accounting' is linguistically analysed to reveal how a mistranslation may cause difficulties in understanding and improving Iranian Accounting. This paper shows how Hesaabdaaree is not ...
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ژورنال
عنوان ژورنال: Nature
سال: 1998
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature28134