amphicoelous


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amphicoelous

[¦am·fə¦sēl·əs]
(vertebrate zoology)
Describing vertebrae that have biconcave centra.
References in periodicals archive ?
This vertebra can be differentiated from the middle and posterior caudal vertebrae of Lusotitan and Galveosaurus (Barco, 2009; Mannion et al., 2013), by the presence of a well-developed amphicoelous centrum, a neural arch placed at midpoint of the centrum dorsal surface, and having a centrum, which is not markedly dorsoventrally compressed.
The Porto Novo vertebra is amphicoelous, differing from the condition observed in anterior caudals of Lourinhasaurus that have a flat posterior face with a central smooth concavity (Mocho et al., 2014a).
The anterior centra are amphicoelous. The posterior face becomes progressively flat toward the anterior part of the series.
The vertebra is amphicoelous, with the posterior articular face markedly concave.
This vertebra is also amphicoelous, but with the anterior articular face more concave than the posterior.