Replacement bone that is bilaterally paired and (in teleosts) articulates with the neurocranium dorsally and the opercle posteriorly[TAO,modified]. [ TAO:0000672 http://en.wikipedia.org/wiki/Hyomandibula ]

#### Term information

**database cross reference**

- ZFA:0000672
- EFO:0003556
- null:http://en.wikipedia.org/wiki/Hyomandibula
- VHOG:0000688
- TAO:0000672

**Subsets**

efo_slim

**axiom lost from external ontology**

relationship loss: overlaps preopercle vertical limb-hyomandibula joint (TAO:0005278)[TAO]

relationship loss: overlaps hyomandibula-metapterygoid joint (TAO:0001979)[TAO]

relationship loss: overlaps hyomandibula-opercle joint (TAO:0005265)[TAO]

relationship loss: overlaps hyomandibular-otic region joint (TAO:0001947)[TAO]

relationship loss: overlaps quadrate-hyomandibula joint (TAO:0001801)[TAO]

**external definition**

Replacement bone that is bilaterally paired and articulates with the neurocranium dorsally and the opercle posteriorly.[TAO]

**homology notes**

This structure (the hyomandibular), on ontogenic grounds alone, can be considered homologous with the amphibian and reptilian columella and the mammalian stapes.[well established][VHOG]

**taxon notes**

In most teleosts, there is a symplectic, and the hyomandibula articulates with it anteroventrally.