| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Pachybiotherium
Taxonomy
Pachybiotherium was named by Ameghino (1902). Its type is Pachybiotherium acclinum.
It was assigned to Didelphidae by Marshall (1982) and Carroll (1988); and to Microbiotheriidae by Ameghino (1902), Goin (1997), Goin et al. (2010) and Goin and Abello (2013).
It was assigned to Didelphidae by Marshall (1982) and Carroll (1988); and to Microbiotheriidae by Ameghino (1902), Goin (1997), Goin et al. (2010) and Goin and Abello (2013).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1902 | Pachybiotherium Ameghino p. 124 |
| 1982 | Pachybiotherium Marshall |
| 1988 | Pachybiotherium Carroll |
| 1997 | Pachybiotherium Goin |
| 2010 | Pachybiotherium Goin et al. |
| 2013 | Pachybiotherium Goin and Abello |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
G. †Pachybiotherium Ameghino 1902
show all | hide all
†Pachybiotherium acclinum Ameghino 1902
†Pachybiotherium illuminatum Goin et al. 2010
†Pachybiotherium minor Goin 1997
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. J. Goin and M. A. Abello 2013 | Pachybiotherium differs from other Microbiotheria in the following combination of characters: very high horizontal ramus; on its alveolar edge, the horizontal ramus de- creases sharply in height in the anterior portion, in such a way that the premolar alveolar series is at a lower level than the molar one; M4/m4 only slightly reduced in relation to M3/m3; lingually inclined protoconid of m1–m2; hipoconid in m1–m3 not labially salient; protocone of M1–M3 very wide anteroposteriorly. |