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Image: Pelycosaurian skulls

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Description: Comparison of "pelycosaurian" skulls: 1 - sphenacodont, 2 - ophiacodont, 3 - caseid. Quadratojugale is green, squamosale is red, jugale is blue.
Title: Pelycosaurian skulls
Credit: dmitrchel@mail.ru
Author: Creator: Dmitry Bogdanov
Usage Terms: Creative Commons Attribution 3.0
License: CC BY 3.0
License Link: https://creativecommons.org/licenses/by/3.0
Attribution Required?: Yes

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