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Sinoergilornis guangheensis
Taxonomy
Sinoergilornis guangheensis was named by Musser et al. (2020). Its type specimen is IVPP V24968, a set of limb elements, and it is a 3D body fossil. Its type locality is Linxia Basin, Miocene, which is in a Miocene terrestrial mudstone in the Liushu Formation of China. It is the type species of Sinoergilornis.
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Sinoergilornis guangheensis Musser et al. p. 3 figs. Figs. 2-6 |
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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.
†Sinoergilornis guangheensis Musser et al. 2020
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. Musser et al. 2020 | The didactyl foot distinguishes Sinoergilornis guangheensis from all Gruidae, Eogrus, Ergilornis, and Sonogrus. Sinoergilornis guangheensis is differentiated from all other Eogruidae by a unique combination of features, including the following that are novel within the remaining didactyl eogruids: (1) enclosure of the intertrochlear incisura between the trochleae of metatarsals III and IV by medial extension of the mediodistal margin of trochlea IV (Figures 2, 4, and 5; mtIV); (2) lack of a laterally extensive ala along the mediodistal margin of trochlea III; (3) exceptional plantar extension of trochlea IV along its lateral margin; (4) a deep, mediolaterally wide and proximodistally elongate incisura along the ventrolateral margin of III:1 (Figure 5; inc); (5) a proximodistally short plantar eminence of III:1 (see Supplementary Material Videos 1, 2, and 3, and data on Dryad: https://doi.org/10.5061/dryad.jh9w0vt6j); (6) recurvature of the ventral margin of the shaft of III:1 (see Supplementary Material Videos 1, 2, and 3, and data on Dryad: https://doi.org/10.5061/dryad.jh9w0vt6j); (7) a distinct, dorsolateral ridge that extends along the proximal margin of the triangular depression and flexor pit of III:1 (Figures 4 and 5; r); (8) a deep, sickle-shaped lateral flexor pit in III:1 (Figure 3; flp); and (9) semicircular, symmet- rical indentations within the lateral margins of the proximal eminence of III:3 (Figures 3, 4, and 5; scd). Characters 4–9 could not be assessed for Urmiornis maraghanus or U. dzabghanensis, and characters 1–3 and 9 could not be assessed for ?Amphipelargus sp. Differentiation was not possible for ?U. cracrafti, U. sp., or A. majori. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Marsh 1875, Witmer and Rose 1991 | |||||
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 | China | Sinoergilornis guangheensis (type locality: 224381) |