File:Spindle diagram.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Spindle_diagram.jpg ‎(734 × 509 pixels, file size: 94 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents


Summary[edit]

Description
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.
Date
Source Own work
Author Petter Bøckman
Other versions
This biology image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.


It is recommended to name the SVG file “Spindle diagram.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
This biology image was uploaded in the JPEG format even though it consists of non-photographic data. This information could be stored more efficiently or accurately in the PNG or SVG format. If possible, please upload a PNG or SVG version of this image without compression artifacts, derived from a non-JPEG source (or with existing artifacts removed). After doing so, please tag the JPEG version with {{Superseded|NewImage.ext}} and remove this tag. This tag should not be applied to photographs or scans. If this image is a diagram or other image suitable for vectorisation, please tag this image with {{Convert to SVG}} instead of {{BadJPEG}}. If not suitable for vectorisation, use {{Convert to PNG}}. For more information, see {{BadJPEG}}.

Licensing[edit]

Public domain 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.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current20:21, 4 February 2011Thumbnail for version as of 20:21, 4 February 2011734 × 509 (94 KB)Petter Bøckman (talk | contribs)Slight cropping
20:12, 4 February 2011Thumbnail for version as of 20:12, 4 February 2011800 × 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

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

View more global usage of this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Spindle_diagram.jpg&oldid=467076992"