Erectile tissue and smooth muscle in snouts of Carettochelys insculpta, Trionchids and other chelonia

@article{Winokur2004ErectileTA,
  title={Erectile tissue and smooth muscle in snouts of Carettochelys insculpta, Trionchids and other chelonia},
  author={Robert M. Winokur},
  journal={Zoomorphology},
  year={2004},
  volume={101},
  pages={83-93}
}
Four families of chelonians, the Carettochelyidae, Trionchidae, Pelomedusidae and Chelidae, possess nasal erectile tissue and masses of smooth muscle within the snout. These specialized tissues appear to control the internal diameter of the narial passage. Two of these families, the carettochelids and trionchilds, can change the angle of the tubular snout relative to the head. The trionchids have numerous pharyngeal papillae that function as respiratory surfaces. The angle of the snout and its… CONTINUE READING

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