Prefrontal bones are absent; post-frontals are possibly indicated by a frequently occurring separate centre of ossification in the postorbital process, to which the frontals always contribute. [Please select]
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The anterior part of this margin, however, may be formed by a prefrontal, which is not clearly set off by a suture. [Please select]
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The relative lengths of the prefrontal and internasal sutures are subequal, or the prefrontal suture is slightly longer. [Please select]
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The posterior surface of the prefrontal forms the anterior wall of the orbit of the eye. [Please select]
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A small nasal process also extends anteriorly from the ventrolateral surface of the prefrontal. [Please select]
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The orbital-nasalis foramen is located in the anterior surface of the prefrontal. [Please select]
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A dorsomedian process begins at about one-third of its distance from the anterior end; the prefrontal articulates with this process. [Please select]
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