Jump to content

File:Phylogenetic tree of Theropods respiratory system 01.JPG

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (4,026 × 4,002 pixels, file size: 2.23 MB, MIME type: image/jpeg)

Summary

Description
English: This diagram illustrate how scientists believe the dinosaur group theropoda shall be classed in a phylogenetic tree, besides Sauropoda and Pterosauria. The main reason with this diagram is to show groups or families which had respiratory system like birds. AS in the diagram is abbreviations for "Airsacs", and ASW means "AirSacs supported by immobile femur and a knee-driven Walk". BL means "Bellow lungs".
  • It is very likely that Deinonychosaurians had airsacs. We don't know whether Deinonychosauria had a walking/breathing system with immobile thighbones, ASW (like birds) or movable thighbones. However, some people suggsest coeluosaurs had the same type of leg movement as birds ("kneedriven walking").[5]
  • Bellow lungs are lungs like our own, which alternately is filled with air, and thereafter emptied, after which you take a new breath. This type of lungs exist in mammals, most reptiles, and most amphibians (although some frogs get their oxygen through the skin). There is no evidence for airsacs in Ornithischia, so the likely had bellow lungs.

References.=

  1. ↑ (see the video at http://www.nsf.gov/news/special_reports/tawa/)
  2. ↑ (Claessens & O'connor, 2006).
  3. ↑ Alcober O.A, Sereno P.C, Larsson H.C.E et.al (2008), "Evidence for Avian Intrathoracic Air Sacs in a New Predatory Dinosaur from Argentina", Public Library of Science Journals.
  4. ↑ http://www.stumbleupon.com/su/20q5Z4/news.bbc.co.uk/2/hi/science/nature/7081166.stm
  5. ↑ http://www.geol.umd.edu/~tholtz/G104/lectures/104coelur.html.
Source Own work
Author Conty

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

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

Date/TimeThumbnailDimensionsUserComment
current07:29, 18 February 2010Thumbnail for version as of 07:29, 18 February 20104,026 × 4,002 (2.23 MB)ContyChanged from "Birds" to "Neornithes". I also changed the (?) at the birdhipped dinosaurs to BL (bellow lungs).
18:50, 16 February 2010Thumbnail for version as of 18:50, 16 February 20104,026 × 4,002 (1.07 MB)ContyI have fixed the diagram by taking out the inaccurates, and add Sauropodomorphas and Pterosaurians.
20:16, 6 January 2010Thumbnail for version as of 20:16, 6 January 20104,585 × 4,648 (1.48 MB)Conty{{Information |Description={{en|1=This diagram illustrate how scientists believe the dinosaur group theropoda shall be classed in a phylogenetic tree. The main reason with this diagram is to show genera, groups or families

Global file usage

The following other wikis use this file:

  • Usage on www.wikidata.org

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://en.wikipedia.org/wiki/File:Phylogenetic_tree_of_Theropods_respiratory_system_01.JPG"