Subdivision of an organism along anterior-posterior axis that is the posteriormost region, extending past the anus (or cloaca, if present), consisting of a tail in some fully formed chordates (or a tail bud in embryos). In animals that have a sacral region, this is the region immediately posterior to this. [ http://orcid.org/0000-0002-6601-2165 ]

This is just here as a test because I lose it

Term information

definition
  • Subdivision of an organism along anterior-posterior axis that is the posteriormost region, extending past the anus (or cloaca, if present), consisting of a tail in some fully formed chordates (or a tail bud in embryos). In animals that have a sacral region, this is the region immediately posterior to this.
external ontology notes
  • We follow XAO is distinguishing the tail region from the tail; the tail bud is part of the tail region; the tail starts after the tail bud
has related synonym
  • tail region
  • postsacral region
  • post-anal tail region
  • post-anal caudal region
id
  • UBERON:0006071
taxon notes
  • This region is reduced in humans and corresponds to the coccyx