Size of this preview: 800 × 476 pixels. Other resolutions: 320 × 190 pixels | 640 × 381 pixels | 1,024 × 609 pixels | 1,280 × 762 pixels | 2,560 × 1,523 pixels | 3,444 × 2,049 pixels.
Original file (3,444 × 2,049 pixels, file size: 924 KB, MIME type: image/png)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
Figure 10: Tarsus structure in basal tetrapods, including amniote and non-amniote taxa.
Schematic diagram for comparing the tarsus structure in the basal tetrapods Acheloma and Greererpeton (amphibian-like tarsus) with regard to that of embolomeres and microsaurs (amniote-like tarsus) and early amniotes. Note the similar structure and construction of the microsaur tarsus with respect to the early amniote Hylonomus. See text for more details of the evolutive significance of the selected taxa. Abbreviations: As, astragalus; Ca, calcaneum; F, fibulare; I, intermedium; T, tibiale; 1, 2, 3, 4, centralia; i, ii, iii, iv, v, distal tarsals. Taxa were redrawn from the following sources: Acheloma (Dilkes, 2015); Greererpeton (Godfrey, 1989); Proterogyrinus (Holmes, 1984); Gephyrostegus (Carroll, 1970); Seymouria (Berman et al., 2000); Westlothiana (Smithson, 1989; Smithson et al., 1994); Pantylus (Carroll, 1968); Tuditanus (Carroll, 1968); Diadectomorphs (Moss, 1972; Berman & Henrici, 2003); Ophiacodon and Haptodus (Romer & Price, 1940); Hylonomus (Carroll, 1964); Captorhinus (Fox & Bowman, 1966); Petrolacosaurus (Peabody, 1952; Reisz, 1981). |
| Date | |
| Source | Piñeiro G, Núñez Demarco P, Meneghel MD. (2016) The ontogenetic transformation of the mesosaurid tarsus: a contribution to the origin of the primitive amniotic astragalus. PeerJ 4:e2036 [1] |
| Author | Graciela Piñeiro, Pablo Núñez Demarco, Melitta D. Meneghel |
Licensing
This file is licensed under the Creative Commons Attribution 4.0 International 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.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:04, 1 September 2018 | | 3,444 × 2,049 (924 KB) | NGPezz | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
