opisthocoelous


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opisthocoelous

(əˌpɪsθəˈsiːləs) or

opisthocoelian

adj
(Zoology) relating to vertebrae in which the centrum is convex and the posterior is concave
References in periodicals archive ?
The centrum is opisthocoelous. The ventral surface of the pneumatic foramen is preserved, and it slopes ventromedially, suggesting that the pneumatic foramen is deep.
At the Cerro Tortuga fossiliferous locality the Pipidae are represented by an isolated opisthocoelous vertebra (MML 871), and the distal end of humerus (MML 856) which typically shows an eminentia capitata with its sagittal plane coinciding with that of the bone shaft (BAEZ, 1987, fig.
The centrum is heartshaped in cranial and caudal view, and moderately opisthocoelous. The neural arch is broken above the neurocentral suture, and two stout pedicles remain fused to the centrum.