The labial features (inner lips A and B parameters) are modeled together with their first derivatives.
Monophyly of Acherontiini, strongly corroborated here, is supported by a labial palp feature and three characters of the genitalia [33], [34].
The structural image (Fig. 4(b)) describes typical labial anatomical features; an epithelial layer (EP) and an underlying lamina propria (LP).
Despite the symbolism of aging (pallor framed by gray curls, furrowed brow, lusterless eyes inside dark circles, prominent nasal labial lines, fading features) the conjured portrait is of beauty, refinement, dignity, nobility, perseverance, intellectual cultivation.
Although similar to labial brackets, lingual brackets feature several differences in terms of dimensions and clinical features, and labial mechanics cannot be applied to lingual devices[29, 30].
Even in this situation, the Ceriantharia display some specific features such as labial tentacles and continuously forming coupled, unpaired complete mesenteries in the intermesenterial compartment that is located on the opposite (ventral) side of the siphonoglyph.
One tooth, however, an incomplete crown recovered separately from the other six loose teeth, does preserve what appear to be wear features on the presumed labial surface some distance from the apex.
The four phonemes were chosen for their balanced features on place of articulation (labial /b/ and /m/ versus alveolar /d/ and /t/).
Wear features were observed on the labial enamel margin of the labial facet on the G2 crown.
The second tooth, MB.R. 2197, does not preserve a large amount of microwear, although some features are present on the labial enamel edge.
