The aim of this study was to determine the morphometric values of the skull and the\nmandible of the common opossum from the Caribbean island of Trinidad and Tobago. The skulls\nand mandibles were obtained from ten opossums captured for research purposes. The skulls and\nmandibles were prepared and cleaned using standard method. Some anatomical landmarks of the\nskulls and mandibles were identified and measured. The results were important for identification\nof the common opossum via comparison and discussion of our results with that of other marsupial\nspecies. Furthermore, the results had clinical importance with regard to regional nerve blocks of the\ninfraorbital, inferior alveolar, and mental nerves for dental extraction and head surgery. This study\nconcluded that by using the anatomical landmarks of the infraorbital and mental foramina it will be\neasier for the veterinarian surgeons during the application of local anesthetic agent for the infraorbital,\ninferior alveolar, and mental nerve blocks.
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