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Ceratonykus
Taxonomy
Ceratonykus was named by Alifanov and Barsbold (2009).
It was assigned to Parvicursoridae by Alifanov and Barsbold (2009); to Ceratonykini by Agnolin et al. (2012); and to Parvicursorinae by Averianov and Lopatin (2021) and Kubo et al. (2023).
It was assigned to Parvicursoridae by Alifanov and Barsbold (2009); to Ceratonykini by Agnolin et al. (2012); and to Parvicursorinae by Averianov and Lopatin (2021) and Kubo et al. (2023).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Ceratonykus Alifanov and Barsbold p. 96 |
| 2012 | Ceratonykus Agnolin et al. p. 47 |
| 2021 | Ceratonykus Averianov and Lopatin |
| 2023 | Ceratonykus 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. †Ceratonykus Alifanov and Barsbold 2009
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†Ceratonykus oculatus Alifanov and Barsbold 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. R. Alifanov and R. Barsbold 2009 | Preorbital skull region long. Upper temporal fenestrae ovate, 0.4 as long as frontals. Length of one frontal almost four times greater than its width. Frontals narrowing rostrally in narrow wedge. Prefrontals adjoining each other medially. Basipterygoid processes two-thirds as high as quadrates. Labiooccipitally, dentaries forming deep and rostrally tapering depression. Mandibular fenestrae extensive. Centra of cervical and anterior caudal vertebrae narrow. Deltopectoral crest separated from humeral head by notch. Basal phalanx of major digit of manus extended, its flanks moderately wide, and distal condyle narrow, symmetrical. Postacetabular plate of ilia with relatively small longitudinal craniomedial crest. Femora strongly curved, nearly half as long as tibiotarsus. Fourth trochanter distinct. Cnemial crest of tibiae undeveloped. Ascending process of astragali high and wide. Tarsometatarsals 1.33 as long as femora. Second and fourth metatarsals tightly adjoining each over entire extent; their dorsal and palmar surfaces ridgelike, deep grooves formed between these bones. Deep notch formed proximodorsally between these metatarsals. Distally, second metatarsals shorter than fourth. Tarsometatarsals 3.5 times as long as third metatarsals. Basal phalanx of fourth digit of hind feet only slightly shorter than basal phalanx of second digit. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Marsh 1875 | |||||
Age range: base of the Middle Campanian to the top of the Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Campanian - Late/Upper Campanian | Mongolia (Omnogov) | C. oculatus (88549) |