Phylogenetic origin of the turtle plastron and hypoischium
![Phylogenetic origin of the turtle plastron and hypoischium](https://pterosaurheresies.files.wordpress.com/2017/08/trachemys-scripta-plastron588.gif)
![](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41586-018-0419-1/MediaObjects/41586_2018_419_Fig1_HTML.png)
A Triassic stem turtle with an edentulous beak
![](https://pterosaurheresies.files.wordpress.com/2019/12/turtle_origins_schoch_sues-588.jpg)
Origin of turtle body plan: Schoch and Sues 2019
![](https://ars.els-cdn.com/content/image/1-s2.0-S0960982213005666-gr1.jpg)
Evolutionary Origin of the Turtle Shell - ScienceDirect
![](http://www.evofossil.com/uploads/1/1/7/2/117297159/stem-testudines-fig1b_orig.png)
Turtle stem group
![](https://0.academia-photos.com/attachment_thumbnails/103510126/mini_magick20230618-1-jg4fa1.png?1687119675)
PDF) A Middle Triassic stem-turtle and the evolution of the turtle body plan
![](https://pterosaurheresies.files.wordpress.com/2019/12/carbonodraco_cladogram588.jpg?w=584&h=787)
Sclerosaurus and the evolution of turtle respiration
![](https://www.frontiersin.org/files/Articles/323974/fevo-06-00007-HTML/image_m/fevo-06-00007-g003.jpg)
Frontiers Sensory Evolution and Ecology of Early Turtles Revealed by Digital Endocranial Reconstructions
![](https://bioone.org/ContentImages/Journals/acpp/57/2/app.2011.0031/graphic/f03_285.jpg)
A New Freshwater Basal Eucryptodiran Turtle from the Early Cretaceous of Spain
![](https://pterosaurheresies.files.wordpress.com/2017/08/sea-turtle-plastron588.jpg?w=584&h=747)
evolution of turtles, The Pterosaur Heresies
![](https://www.researchgate.net/publication/327161828/figure/fig10/AS:731590078505011@1551436075796/Puboischiadic-plate-in-stem-turtles-a-c-Photograph-line-drawing-and-reconstruction-of.jpg)
Puboischiadic plate in stem turtles a–c, Photograph, line drawing and