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Awengkere magnanatis
Taxonomy
Awengkere magnanatis was named by Worthy and Yates (2018). Its type specimen is NTM P.4281, a limb element (R tarsometatarsus), and it is a 3D body fossil. Its type locality is Alcoota (incl. Rochow) Locality, which is in a Miocene terrestrial horizon in the Waite Formation of Australia.
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Awengkere magnanatis Worthy and Yates p. 224 figs. Fig. 1A, B, E-H |
| 2020 | Awengkere magnanatis Worthy and Nguyen p. 78 |
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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.
†Awengkere magnanatis Worthy and Yates 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. H. Worthy and A. M. Yates 2018 | A large anatid defined by the following unique combination of characters. Tarsometatarsus lacks fossa metatarsi I; has a relatively broad shaft that is relatively shorter than in anserines and tadornines, yet is more elongate than in species of Oxyura and Biziura; in dorsal view, the foramen vasculare distale is separated from the incisura intertrochlearis lateralis by a relatively elongate canalis intertrochlearis distalis (autapomorphy); the foramen vasculare distale is small and passes obliquely through the shaft to open into a groove that opens into the incisura intertrochlearis lateralis; the trochleae, especially trochlea metatarsi II, are not greatly splayed; trochlea metatarsi II is grooved distodorsally, lateromedially narrow especially dorsally and overlaps the articular surface of trochlea metatarsi III plantarly; and trochlea metatarsi IV is slightly splayed laterally from the shaft.
The carpometacarpus has a distinct notch in its dorsal rim; an elongate, dorsoventrally thin processus extensorius lacking a rugosity on its tip, and with the processus alularis dorsally projecting on its distal margin; os metacarpale minus distinctly grooved on its caudal suface near the proximal synostosis; the insertion of ligamentum radiocarpometacarpale dorsale (external scapholunar ligament) forms a narrow elongate distinct scar on a flat facies, not on a ridge that links to the scar for the insertion of ligamentum ulnocarpometacarpale dorsale (external cuneiform ligament) well separated distally from the latter; and caudally the distal end of the ventral rim of the trochlea carpalis is distinctly thickened . |
Measurements
No measurements are available
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| Source: subf = subfamily, o = order | |||||
| References: Marsh 1875, Sedinger 1997, Kiessling 2004 | |||||
Age range: Late/Upper Miocene or 11.63000 to 5.33300 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Miocene | Australia (Northern Territory) | Awengkere magnanatis (type locality: 13315) |