The present pic is showing horizontal ramus, vertical ramus and the teeth in a mandible. The morphology of teeth suggests that the mandible belonged to a carnivorous animal.The feature encircled can be called as posterio-basal notch or articular surface.It could be for some muscle attachment or for articulation should be compared with museum skeletons. first the animal to which the mandible belonged should be identified from anatomy of teeth and mandible itself.
This is a picture typical to carnivores and the circled area is the gap between the angular process (below) and the condyloid process above, of the mandibel. See for example (link).
It is the actual angular process where muscles attach, while the protrusion above it is the condyloid process, which are shifted downwards in non-masticating jaw joints.
http://www.ncbi.nlm.nih.gov/pubmed/18665225
Hi Markus!
If I understood your question correctly, you want to know how is name of the depression (notch). Yes? So, I wrote you into your picture of what it is. i hope that it helps. If you should have any questions, you write.
Best regards,
Miloš
P.S. Exxcuse my English. Thanks. :-)
You have been presented with and article that give you directions by Milos Vater. We thank him for that. However, the mandible of the vertebrate animals have dicriptive features that are similar. That side is the vertical ramus of the mandible here with two notches for muscle attachments. You cannot immagine the ventral part of the mandible to be articulated to another bone for flexibility. I would rather say that circled part is the caudo-vetral ramal notch. Check out for its nomenclature and claim its copy right ownership. Check out for this "Caudofrontal depresion of olopade" and "Bilateral openings in the frontal bones of Sahel goats". Good luck.
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