All of the following are of ectomesenchymal origin EXCEPT:

The oral mucosa (stratified squamous epithelium) is derived from ectoderm (not ectomesenchyme). Ectomesenchyme (neural crest-derived mesenchyme) gives rise to: dental pulp, dentin (odontoblasts), cementum (cementoblasts), periodontal ligament, alveolar bone, and connective tissue of the face. The epithelial lining of the oral mucosa is ectodermal, while the underlying lamina propria connective tissue is ectomesenchymal.