|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Avetheropoda - Rheidae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|J. I. Noriega et al. 2017||Lateral border of shaft of tarsometatarsus at level of fossa infracotylaris low (not elevated dorsally) and widened transversely, forming a large and convex ridge in lateral view. In lateral view, attachment of perforans brevis on proximal end of tarsometatarsus strong and located dorsally. Fossa parahypotarsalis lateralis large. Cross-sections of middle and distal portions of tarsometatarsal shaft of triangular form, with smooth anterior grooving. Sulcus extensorius of tibiotarsus deep and ending proximally. Ratio between tibiotarsal and tarsometatarsal length low (1.0), showing that O. kirchneri had relatively the longest tarso- metatarsus among known rheiform taxa.|