A hard, thorny or needle-like structure which occurs on various animals. Animals such as porcupines and sea urchins grow spines as a self-defense mechanism. Spines are often formed of keratin. Other animals with spines are hedgehogs, spiny mice and at least two ornithischian dinosaurs. [ http://en.wikipedia.org/wiki/Spine_(zoology) ]

This is just here as a test because I lose it

Term information

Subsets

grouping_class

editor note

May be reclassified depending on CARO treatment of appendage

has related synonym

spiny appendage

id

UBERON:0008260

Term relations

Subclass of: