Splenial

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Hemimandible of Trimerorhachis; the splenial (labeled "sp") is visible on the interior surface Image from page 37 of "Water reptiles of the past and present" (1914) (14586264740).jpg
Hemimandible of Trimerorhachis ; the splenial (labeled "sp") is visible on the interior surface

The splenial is a small bone in the lower jaw of reptiles, amphibians and birds, usually located on the lingual side (closest to the tongue) between the angular and surangular. [1] [2]

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References

  1. Romer, A. S. (1956). Osteology of the Reptiles. 772 pp. Chicago & London.
  2. Watson, D. M. S. (1912). LXVII.—On some reptilian lower jaws. Journal of Natural History, 10(60), 573-587.