File:Spindle diagram.jpg
Spindle_diagram.jpg (734 × 509 pixels, file size: 94 KB, MIME type: image/jpeg)
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[edit]DescriptionSpindle diagram.jpg |
English: Evolution of Vertebrate from the Cambrium to the present at a class level as a traditional spindle diagram. The width of the spindle represents the number of families as a rough estimate of diversity. The diagram is based on Benton, M. J. (1998) The quality of the fossil record of vertebrates. P. 269–303, in Donovan, S. K. and Paul, C. R. C. (eds), The adequacy of the fossil record, Fig. 2. Wiley, New York, 312 p.
The figures representing classes are (from left): Agnatha, Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves and Mammalia. The two extinct classes are Placodermi and Acanthodii. All classes interpreted traditionally. Bentons notes to his own tree: Number of families is an imperfect measure of diversity. Reptilia in particular should probably have been shown as far more diverse in the Mesozoic. |
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Source | Own work | |||||
Author | Petter Bøckman | |||||
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:21, 4 February 2011 | 734 × 509 (94 KB) | Petter Bøckman (talk | contribs) | Slight cropping | |
20:12, 4 February 2011 | 800 × 567 (94 KB) | Petter Bøckman (talk | contribs) | {{Information |Description ={{en|1=Evolution of Vertebrate from the Cambrium to the present at a class level as a traditional spindle diagram. The with of the spindle represent number of families, as a rough estimate of diversity. The diagram is based |
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Horizontal resolution | 28 dpc |
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Software used | Adobe Photoshop 7.0 |
File change date and time | 21:20, 4 February 2011 |
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