Orthopus, from Ancient Greek ὀρθός (orthós), meaning "straight", and πούς (poús), meaning "foot", is an extinct genus of non-mammalian synapsids. It is based on a partial humerus that closely resembles Estemmenosuchus, in the limited comparisons possible.

See also

• List of therapsids

References

• The main groups of non-mammalian synapsids at Mikko's Phylogeny Archive