| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Eleutherodontida
Taxonomy
Eleutherodontida was named by Kermack et al. (1998).
It was assigned to Allotheria by Kermack et al. (1998); to Haramiyida by Meng et al. (2017); and to Allotheria by Krause et al. (2020).
It was assigned to Allotheria by Kermack et al. (1998); to Haramiyida by Meng et al. (2017); and to Allotheria by Krause et al. (2020).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1998 | Eleutherodontida Kermack et al. p. 586 |
| 2017 | Eleutherodontida Meng et al. p. 291 |
| 2020 | Eleutherodontida Krause et al. |
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.
Subor. †Eleutherodontida Kermack et al. 1998
show all | hide all
Fm. †Hahnodontidae Sigogneau-Russell 1991
hide
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. A. Kermack et al. 1998 | Allotheria with molar teeth having usually basined crowns, the basin being open at one end, and crossed by transverse flutings with sharp edges. Upper molars with three longitudinal rows of cusps, two of these being marginal; the row interpreted as buccal consists of a few or one cusp only. The third row is nearly central, dividing the basin into two unequal parts, deepest between the lingual and medial rows. One marginal cusp considerably larger than the others. Root either single showing incipient division, or fully divided into multiple components.
Differ from multituberculates in having cusps of different height with the distal cusp the largest, and an oval outline (rather than being roughly rectangular); differ from Jurassic and Early Cretaceous multituberculates in having three rows of cusps and the lingual row curyed. Differ from haramiyid upper molars (except Haramiyavia) by having three rows of cusps instead of two, the latter being more numerous on the marginal rows (up to ten in the buccal row' up to |2 in thę lingual row); differ from multituberculates and haramiyids by having very accentuated transverse fluting. Lower molars with a single marginal row of cusps, continuous around the tooth except for the anterior opening into the basin. Differ from multituberculate and haramyid lower molars where the two rows of cusps are parallel and no fluting occurs. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988, Hopson 1973, Luo et al. 2003 | |||||
Age range: base of the Late/Upper Tithonian to the top of the Valanginian or 150.80000 to 132.90000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Tithonian - Early/Lower Berriasian | Morocco (Oriental) | Hahnodontidae indet., Hahnodon taqueti, Denisodon moroccensis (45726) | |
| Valanginian | USA (Utah) | Cifelliodon wahkarmoosuch (105613) |