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Xenorhinos bhatnagari
Taxonomy
Xenorhinos bhatnagari was named by Hand et al. (2023). Its type specimen is QM F6104, a partial skull (rostral fragment with rightP4–M2 and alveoli for right C1, P2, and M3), and it is a 3D body fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Xenorhinos bhatnagari Hand et al. p. 5 figs. Figures2–5, Table 2 |
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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.
†Xenorhinos bhatnagari Hand et al. 2023
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. J. Hand et al. 2023 | The fossils described here are referred toXenorhinosbecause they exhibit the following combina-tion of craniodental features: dental formula I?/2 C1/1P2/2 M3/3; posterior accessory cusp present on C1, reten-tion of reduced P2, little reduction of M3; cranium withbroad rostrum and interorbital region, large lacrimalforamen, exceptionally short palate, tall postorbital zygo-matic process, constricted sphenorbital bridge, and pro-nounced ventral flexion of rostrum; dentary with lowcoronoid process (2–2.5crown height of m3), widecondylar process at level of tooth alveoli, and broad, lat-erally deflected angular process.Xenorhinos bhatnagaridiffers fromX.halli, the typeand only other species of the genus, in its proportionatelylonger rostrum and shorter braincase, slightly moreinflated rostrum and longer hard palate, its more com-plete ossified nasal septum, less constricted sphenorbitalbridge, its round rather than elongated infraorbital fora-men, longer, more complete sagittal crest extending tothe lambdoid crest, shorter sphenorbital fissure and basi-sphenoid, presence of a foramen subovale, M2 with threerather than four roots and smaller heel directed posteri-orly rather than posterolingually, and dentary withbroader angular process that is more laterally deflected(see Description, Figures2–6, and Table2).Type locality and age: Ross-Scott-Orr (RSO) Site, onGodthelp Hill, D Site Plateau in the Riversleigh World Heri-tage Area, Boodjamulla National Park, in Waanyi country,northwestern Queensland, Australia (Archer et al.,1994;Arena et al.,2014; see Geological Setting, and Figure1).GPS co-ordinates for this fossil locality have been lodgedwith the Queensland Museum, Brisbane. A speleothem(flowstone) that was part of the RSO Site deposit and associ-ated with the bat fossils has been radiometrically dated at16.55 ± 0.31 Ma (Woodhead et al.,2016;Figure1f). |
Measurements
No measurements are available
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| Source: o = order, c = class, subp = subphylum | |||||
| References: Simmons et al. 2008, Hendy et al. 2009, Carroll 1988, Ji et al. 2002 | |||||
Age range: Early/Lower Miocene or 23.04000 to 15.98000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Miocene | Australia (Queensland) | Xenorhinos bhatnagari (231917) |