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Albertonykus (Alberta claw)
Taxonomy
Albertonykus was named by Longrich and Currie (2009).
It was assigned to Parvicursorinae by Xu et al. (2010) and Choiniere et al. (2010); to Mononykini by Agnolin et al. (2012); and to Alvarezsauridae by Longrich and Currie (2009), Averianov and Lopatin (2021) and Kubo et al. (2023).
It was assigned to Parvicursorinae by Xu et al. (2010) and Choiniere et al. (2010); to Mononykini by Agnolin et al. (2012); and to Alvarezsauridae by Longrich and Currie (2009), Averianov and Lopatin (2021) and Kubo et al. (2023).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Albertonykus Longrich and Currie pp. 240-241 |
| 2010 | Albertonykus Choiniere et al. p. 573 fig. 2 |
| 2010 | Albertonykus Xu et al. p. 14 fig. 8 |
| 2012 | Albertonykus Agnolin et al. p. 47 |
| 2021 | Albertonykus Averianov and Lopatin |
| 2023 | Albertonykus Kubo et al. p. 29 fig. 18 |
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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.
G. †Albertonykus Longrich and Currie 2009 [Alberta claw]
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†Albertonykus borealis Longrich and Currie 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. R. Longrich and P. J. Currie 2009 | Small alvarezsaur with the following combination of characters: ulna extremely broad (35% as wide as long), bearing a tuber on its medial margin, with two articular facets for the
humerus and a large radial articular facet; manual ungual I with Y-shaped lateral grooves, ventral groove of manual ungual reaches proximally as far as the ventral foramina; highly reduced fibular crest of the tibia; shaft of metatarsal III with sharp ventral keel and flat, unexpanded dorsal surface. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Marsh 1875, Benton 1983 | |||||
Age range: Late/Upper Maastrichtian or 70.60000 to 66.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Maastrichtian | Canada (Alberta) | Albertonykus borealis (55363) | |
| Late/Upper Maastrichtian | USA (South Dakota) | Albertonykus sp. (224484) |