has part
has part
has_part
characteristic of
has modifier
abnormal caudal vertebrae morphology
absent caudal vertebrae
absence of all of the bony segments of the coccyx or tail
There are usually 27-30 caudal vertebrae present in rodents and only 3-5 fused caudal vertebrae in human.
MP:0004653
MPheno.ontology
abnormal
absent
caudal vertebra