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Luangwa sudamericana
Taxonomy
Luangwa sudamericana was named by Abdala and Sa-Teixeira (2004). Its type specimen is MCP 3167PV, a partial skull, and it is a 3D body fossil. Its type locality is Unknown locality, between Candelaria and Vera Cruz, which is in an Anisian/Ladinian terrestrial horizon in the Santa Maria Formation of Brazil.
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Luangwa sudamericana Abdala and Sa-Teixeira p. 12 figs. 1-5 |
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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.
†Luangwa sudamericana Abdala and Sa-Teixeira 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. Abdala and A. M. Sa-Teixeira 2004 | A traversodontid most similar to Luangwa drysdalli Brink 1963 and Scalenodon angustifrons (Parrington 1946). As in these species the upper postcanines are oval-outlined and feature an anterolabial cingulum. As in L. drysdalli the new species has a posterior cingulum with tiny cuspules behind the transverse crest of the upper postcanines, but less developed in L. sudamericana where it does not extend along the entire posterior border of the tooth. It also has tiny cuspules in front of the anterior transverse crest of the lower postcanines forming an incipient cingulum. Other similarities with L. drysdalli include a short snout and temporal region, large orbits and angle of the dentary slightly projected posteriorly. Differentiating L. sudamericana from L. drysdalli and S. angustifrons is a well-defined posterior accessor y cusp on the labial crest of the upper postcanines. The presence of one anterior accessory cusp on the labial (sectorial) crest of the upper postcanines is a difference with the holotype of L. drysdalli (BP/1/3731), but not with OUMNH TSK 121. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Ladinian or 241.46400 to 237.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Anisian - Ladinian | Brazil (Rio Grande do Sul) | Luangwa sudamericana (type locality: 106507) | |
| Ladinian - Carnian | Brazil (Rio Grande do Sul) | Luangwa sudamericana (214440) |