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Pappotherium pattersoni
Taxonomy
Pappotherium pattersoni was named by Slaughter (1965) [genotype]. Its type specimen is SMP-SMU 71725, a maxilla (right maxillary fragment preserving the M3 and M4), and it is a 3D body fossil. Its type locality is Butler Farm, which is in an Aptian/Albian terrestrial claystone in the Antlers Formation of Texas. It is the type species of Pappotherium.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Pappotherium pattersoni Slaughter |
| 1978 | Slaughteria eruptens Butler |
| 1979 | Pappotherium pattersoni Kielan-Jaworowska et al. p. 183 |
| 2004 | Pappotherium pattersoni Kielan-Jaworowska et al. pp. 411, 419-420 |
| 2004 | Slaughteria eruptens Kielan-Jaworowska et al. pp. 411, 421 |
| 2011 | Pappotherium pattersoni Davis and Cifelli p. 448 |
| 2011 | Slaughteria eruptens Davis and Cifelli p. 455 |
| 2011 | Pappotherium pattersoni Winkler et al. p. 9 |
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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.
†Pappotherium pattersoni Slaughter 1965
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Invalid names: Slaughteria eruptens Butler 1978 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. H. Slaughter 1965 | Same as for Pappotheriidae plus the presence of a well-developed and separate parastyle, extra cusp on the crest connecting the metacone to the metstylar area, and presence of small but distinct conules. | |
| B. M. Davis and R. L. Cifelli 2011 | Putative metatherian differing from other basal metatherians (such as Kokopellia) in lack of twinning between hypoconid and hypoconulid, absence of buccal postcingulid, and presence of distal metacristid on lower molars; differs from deltatheroidans in subequal paraconid and metaconid on lower molars; differs from Holoclemensia in inferred presence of four molars, larger stylocone, absence of mesostyle, deeper ectoflexus, closer approximation of paracone and metacone, mesiodistally longer trigonid, subequal paraconid and metaconid, and presence of distal metacristid; differs from Slaughteria in larger size, inferred presence of four molars, and weaker paracristid. | |
| B. M. Davis and R. L. Cifelli 2011 (Slaughteria eruptens) | Very small tribosphenidan characterized by strongly molariform dp4 and dp5; permanent p5 premolariform but with an expanded talonid; differs from Pappotherium in smaller size, presumed presence of three
molars, stronger paracristid; differs from Holoclemensia in absence of metaconid on p5, subequal paraconid and metaconid, presence of distal metacristid, and relatively smaller talonid; differs from Kermackia in absence of a metaconid on p5, subequal paraconid and metaconid, weaker distal metacristid, relatively taller trigonid, and relatively mesiodistally shorter talonid; differs from deltatheridiids in presence of five lower premolars and three molars, subequal paraconid and metaconid, and possession of entoconid. |