develops from
develops from
existence starts during or after
start stage
urostyle
TAO:0000158
ZFA:0000158
compound centrum
zebrafish_anatomy
This centrum may be formed via the fusion of the terminal centrum and half-centrum. It is sometimes termed the 'ultimate' vertebra. Develops from the fused preural centrum 1+ ural centrum 1.
ultimate vertebra
last vertebra
ural centrum 2
preural centrum 1+ ural centrum 1
endochondral bone
larval:days 14-20