| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Potamosiren magdalenensis
Taxonomy
Potamosiren magdalenensis was named by Savage (1951). Its type specimen is UCMP 39471, a mandible, and it is a 3D body fossil.
It was recombined as Ribodon magdalenensis by Marshal et al. (1983).
It was recombined as Ribodon magdalenensis by Marshal et al. (1983).
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Potamosiren magdalenensis Reinhart p. 204 figs. 1-2 |
| 1951 | Potamosiren magdalenensis Savage p. 204 figs. Fig. 1-2 |
| 1966 | Felsinotherium ortegense Kellogg figs. Plate 36 |
| 1966 | Metaxytherium ortegense Kellogg p. 93 |
| 1974 | Metaxytherium ortegense Fondi and Pacini p. 45 |
| 1982 | Potamosiren magdalenensis Domning p. 600 |
| 1983 | Ribodon magdalenensis Marshal et al. p. 52 |
| 1994 | Potamosiren magdalenensis Domning p. 189 |
| 1996 | Potamosiren magdalenensis Cozzuol p. 328 |
| 1996 | Potamosiren magdalenensis Domning p. 380 |
| 2014 | Potamosiren magdalenensis Voss p. 91 figs. Figure 3 |
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.
†Potamosiren magdalenensis Savage 1951
show all | hide all
Invalid names: Metaxytherium ortegense Kellogg 1966 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. H. Reinhart 1951 | Mandible relatively longer, thinner, less massively built than in Trichechus; strong anteriorly directed coronoid process; dorsal border of mandibular notch thins to sharp crest; pronounced elongation of horizontal ramus between anterior mental foramen and anterior border of vertical ramus; alveoli for cheek teeth decrease markedly, rather than subquadrate with an expanded base as Trichechus; teeth not homodont; three cheek teeth present in type; length of M3 70 per cent greater, width 25 per cent greater than corresponding measurements of comparable cheek teeth in Trichechus latirostris Harland and T. senegalensis Desmarest; permanent diastem between anterior cheek tooth and incisors; trefoil-like projection extends from hypoconid into middle of main transverse valley; hypoconulid more powerfully developed and higher crowned than in Trichechus; lateral side of hypoconulid more strongly developed than medial. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Domning 1979, Nowak 1991, Kiessling 2004 | |||||
Age range: base of the Burdigalian to the top of the Laventan or 20.45000 to 11.00000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Burdigalian | Colombia (Cundinamarca) | Potamosiren magdalenensis (190374) | |
| Laventan | Colombia | Potamosiren magdalenensis (13750) | |
| Laventan | Colombia (Tolima) | Metaxytherium ortegense (64781) | |
| Laventan | Colombia (Huila) | Potamosiren magdalenensis (58455 140051 188021 188239 188240) |