caudal vertebra


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

caudal vertebra

[′kȯd·əl ′vər·tə·brə]
(anatomy)
Any of the small bones of the vertebral column that support the tail in vertebrates; in humans, three to five are fused to form the coccyx.
References in periodicals archive ?
6 2 BW, body weight; HB, head and body length; T, tail length; FFsu, fore foot length sine unguis; HFsu, hind foot length sine unguis; GLS, greatest length of skull; TW, maximum width of tail without hairs; CVL, caudal vertebra length; CVW, maximum caudal vertebra width.
Description: MG 8805 is a transversely deformed middle caudal vertebra (Fig.
One of the proposed autapomorphies for this taxon is the presence of a circular spinoprezygapophyseal fossa (sprf) on the anterior caudal vertebra, also described in Jobaria (Sereno et al.
Description: Partial middle caudal vertebra lacking the neural arch (Fig.
This middle caudal vertebra only bears a slight anterior displacement of the neural arch more pronounced than in MG 4811 or MG 8805.
Anal-fin rays 26-33 (30), 7-12 (9) pterygiophores anterior to first caudal vertebra.
Anal-fin rays 30-33 (31), 10-13 (12) pterygiophores anterior to first caudal vertebra.
First caudal vertebra with two canals, a small proximal one at base of haemal arches, which fuse in midline briefly before diverging again to form posteriorly directed funnel-like second arch.
Abdominal/caudal vertebral pattern is Type B, but haemal arch of second caudal vertebra is somewhat enlarged.
Vertebral transition a modified Type A, with the tenth abdominal and first caudal vertebrae (only) with a small basal haemal canal, the main haemal arch of the first caudal vertebra expanded, that of the second about half the size of the first, remaining caudal haemal arches normal; swimbladder terminates at the haemal canal of second caudal vertebra.