Image: Soft tissue structures in Platecarpus

Description: Selected soft tissue structures in the head and neck region of LACM 128319. (A) Close up of the left narial opening under UV light showing skin impressions (scales) covering large parts of the osseous nasal aperture. Arrows indicate the inferred relationship of the fleshy nostril (area without skin covering) to the bony nostril. (B) Scale impressions on the frontal under UV light. (C) Scale impressions on the prefrontal under UV light. (D) Tracheal rings exposed in the left lateral temporal fenestra. (E) Tracheal rings below the cervical vertebral column. (F) Two parallel strings of bronchial rings located below the anteriormost dorsal vertebra. Scale bars equal 3 cm (A, C) and 2 cm (B, D–F), respectively.
Title: Soft tissue structures in Platecarpus
Credit: Lindgren J, Caldwell MW, Konishi T, Chiappe LM (2010) Convergent Evolution in Aquatic Tetrapods: Insights from an Exceptional Fossil Mosasaur. PLoS ONE 5(8): e11998. doi:10.1371/journal.pone.0011998.g003
Author: Johan Lindgren, Michael W. Caldwell, Takuya Konishi, Luis M. Chiappe
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