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IRMNG taxon detailsOculudentavis Xing, O'Connor, Schmitz, Chiappe, McKellar, Yi & Li, 2020 †
fossil only
Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details]
Taxonomic remark As unassigned Aves in original description (although referred to as "dinosaur" in article title). The authors state:...
Taxonomic remark As unassigned Aves in original description (although referred to as "dinosaur" in article title). The authors state: HPG-15-3 [holotype of Oculudentavis khaungraae gen. et sp. nov.] preserves no features that unambiguously indicate its phylogenetic position, although the sum of the observed morphologies suggests that the taxon falls outside Ornithuromorpha. The extensive tooth row resembles noncoelurosaur theropods and the ornithurine Ichthyornis, whereas the presence of premaxillary teeth (which are absent in the ornithurines Hesperornis and Ichthyornis), complete infratemporal and supratemporal fenestrae (which are typically absent in Ornithothoraces), the quadrate with a broad orbital process (which is typically narrow in Ornithuromorpha) and the absence of a predentary (which is present in toothed Cretaceous ornithuromorphs) all suggest a more-basal position. [details]
IRMNG (2023). Oculudentavis Xing, O'Connor, Schmitz, Chiappe, McKellar, Yi & Li, 2020 †. Accessed at: https://irmng.org/aphia.php?p=taxdetails&id=11927112 on 2024-10-31
Date action by
original description
Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details]
basis of record Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details] verified source for family Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 note: No family assignment (i.e., incertae sedis in Aves) [details] name verified source Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details] current name source Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details] extant flag source Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details] habitat flag source Xing, L.; O'Connor, J. K.; Schmitz, L.; Chiappe, L. M.; McKellar, R. C.; Yi, Q.; Li, G. (2020). Hummingbird-sized dinosaur from the Cretaceous period of Myanmar. <em>Nature.</em> 579(7798): 245-249., available online at https://doi.org/10.1038/s41586-020-2068-4 [details] Unreviewed
Taxonomic remark As unassigned Aves in original description (although referred to as "dinosaur" in article title). The authors state: HPG-15-3 [holotype of Oculudentavis khaungraae gen. et sp. nov.] preserves no features that unambiguously indicate its phylogenetic position, although the sum of the observed morphologies suggests that the taxon falls outside Ornithuromorpha. The extensive tooth row resembles noncoelurosaur theropods and the ornithurine Ichthyornis, whereas the presence of premaxillary teeth (which are absent in the ornithurines Hesperornis and Ichthyornis), complete infratemporal and supratemporal fenestrae (which are typically absent in Ornithothoraces), the quadrate with a broad orbital process (which is typically narrow in Ornithuromorpha) and the absence of a predentary (which is present in toothed Cretaceous ornithuromorphs) all suggest a more-basal position. [details]
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