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Hahnotheriidae
Taxonomy
Hahnotheriidae was named by Butler and Hooker (2005).
It was assigned to Multituberculata by Butler and Hooker (2005).
It was assigned to Multituberculata by Butler and Hooker (2005).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2005 | Hahnotheriidae Butler and Hooker p. 186 figs. Figs. 4C, 10, 11A, 12 |
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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.
Fm. †Hahnotheriidae Butler and Hooker 2005
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. M. Butler and J. J. Hooker 2005 | Second upper molar longer lingually than buccally, only slightly narrowed distally. There are five buccal cusps, separated by transverse valleys, and seven lingual cusps on a ridge. Anterobuccal ridge absent. Central valley horizontal, rather than basined, open distally, its sides ornamented by regular series of ridges arising from the cusps. There are probably three roots, due to division of the mesial root. Second lower molar short, with three lingual cusps, the first highest; buccal row shorter than lingual row, with several small cusps on a ridge. |