caudal vertebra


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  • noun

Synonyms for caudal vertebra

one of 4 vertebrae in the human coccyx

References in periodicals archive ?
The relationship between the tail length and the caudal vertebra length was investigated and both lengths were positively correlated (r = 0.
On the other hand, according to the relationships between the tail width and the caudal vertebra width, the thickness of the tail variation was caused by the soft tissue around the caudal vertebrae (Figs.
Description: Middle or posterior caudal vertebra lacking the neural arch (Fig.
Mateus (2005) referred this caudal vertebra to an indeterminate theropod.
There was also no case in round 1 or round 2 where inter-observer agreement was 100% on either the cephalic or caudal vertebra in the same case.
It has a chevron facet, which indicates that it is a caudal vertebra.
Each pair of rectrices attached, presumably by a ligament, to a caudal vertebra ([ILLUSTRATION FOR FIGURE 1C OMITTED]: Owen 1862; Steiner 1938; de Beer 1954).
First haemal arch emanating from first caudal vertebra, anterior parapophysis directed ventromedially to fuse with contralateral structure, produced as haemal spine.
8): precaudal vertebrae 11; caudal vertebrae (including terminal element) 16; vertebrae 3-11 with pleural rib articulating with respective parapophyses; twelve pairs of epineurals, articulating with vertebrae as follows: epineurals 1, 2 with corresponding parapophyses, 3-10 with corresponding pleural ribs, epineural 11 reduced and not articulating with pleural rib and 12 highly reduced and embedded in tissue; first caudal vertebra with expanded haemal arch and tiny haemal spine; haemal arch comprising elongate parapophyses, "rib-like" in appearance in lateral view; where parapophyses join ventrally to form haemal arch, a nubbin of bone (haemal spine) projecting posteriorly (Fig.
For this species, caudal vertebra number 18 exhibits a specific kind of spine, which is characteristic for each species.
In type B, the last two abdominal vertebrae have a bridge joining the haemal arches across the midline, forming a haemal canal; the first caudal vertebra has broad haemal arches with a small basal haemal canal and a larger secondary canal distal to this, which forms a posteriorly tapering funnel and embraces the posterior end of the swimbladder.