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Opisthodactylus kirchneri
Taxonomy
Opisthodactylus kirchneri was named by Noriega et al. (2017) [Museo Florentino y Carlos Ameghino]. Its type specimen is MUFYCA-647, a set of limb elements (right femur, both tibiotarsi and tar- sometatarsi, and six pedal phalanges (first phalanx of left digit II; first and second phalanges of left digit III; and fi), and it is a 3D body fossil. Its type locality is Santa Maria Valley Andalhuala Fm, which is in a Montehermosan/Chapadmalalan terrestrial horizon in the Andalhuala Formation of Argentina.
Synonymy list
| Year | Name and author |
|---|---|
| 2017 | Opisthodactylus kirchneri Noriega et al. p. 4 |
| 2023 | Opisthodactylus kirchneri Tambussi et al. p. 264 |
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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.
†Opisthodactylus kirchneri Noriega et al. 2017
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| 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. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Marsh 1875, Benton 1983 | |||||
Age range: base of the Montehermosan to the top of the Zanclean or 5.00000 to 3.60000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Messinian - Zanclean | Argentina (La Rioja) | Opisthodactylus kirchneri (152263) | |
| Montehermosan - Chapadmalalan | Argentina (Catamarca) | Opisthodactylus kirchneri (type locality: 157795) |