Frog Urostyle, Varanus & Fowl Caudal Vertebrae, Pygostyle with Diagrams- All Bachelor

Comparative Study Of Vertebrate Bones: Frog Urostyle, Varanus & Fowl Caudal Vertebrae, Pygostyle with Diagrams

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Comments

i) It is the Xth vertebra representing the caudal region.

ii) It is long and triangular with pointed opex directed backwards.

iii) Centrum is long, rod like with broad anterior end bearing two concavities

i) The centrum is strongly procoelous.

ii) Neural spine is long, pointed and backwardly directed.

iii) Pre and postzygapophysis are well-developed.

i) It resembles the anterior caudal vertebra.

ii) Two nodules are found below the center.

iii) Absence of chevron bone.

i) It is small.

ii) Centrum is heterocoelous but small.

iii) Pre and post zygapophyses are absent.

iv) Neural spine is small and bifid.

i) It is the last vertebrae caudal region.

ii) It is commonly known as plough-share.

iii) It supports the rectrices.