Crocodilian respiration

Description:

Description: English: The crocodilian respiratory system as observed in Alligator sinensis. A shows an opened gullar valve, allowing respiration through the oral cavity. B shows a closed gullar valve, allowing crocodilians to open their jaws underwater without risk of drowning. Respiration is limited to the narial passage. Date: 8 December 2021. Source: Yoshida Junki, Hori Atsushi, Kobayashi Yoshitsugu, Ryan Michael J., Takakuwa Yuji and Hasegawa Yoshikazu 2021 A new goniopholidid from the Upper Jurassic Morrison Formation, USA: novel insight into aquatic adaptation toward modern crocodylians R. Soc. open sci. 8: 210320. 210320. http://doi.org/10.1098/rsos.210320. Author: Yoshida Junki, Hori Atsushi, Kobayashi Yoshitsugu, Ryan Michael J., Takakuwa Yuji and Hasegawa Yoshikazu.