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Shenshouidae
Taxonomy
Shenshouidae was named by Mao and Meng (2019). It is not extant.
It was assigned to Euharamiyida by Mao and Meng (2019).
It was assigned to Euharamiyida by Mao and Meng (2019).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Shenshouidae Mao and Meng |
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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. †Shenshouidae Mao and Meng 2019
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. Y. Mao and J. Meng 2019 | Dental formula I1-P2-M2/i1-p1-m2; one pair of upper incisors with two or three cusps; upper premolars not basined and bearing no small ornamental cuspules
and/or enamel flutings in the basin; the ultimate upper premolar not considerably wider than molars; the lower premolar (p4) sub-molariform with a main mesiolingual cusp (a1) and a long-basined heel bearing two rows of cusps; molar cusp height uneven; a1/A1 are the highest (strongest) cusps on the lower and upper molars, but less inflated than in other Jurassic euharamiyidans; the distolingual cusp denoted as a4 is the second-largest of the lower molars; lingual cusps (a1–a4) of lower molars and labial cusps (A1–A4) on the upper molars engage in chewing, similar to the M2/m2 occlusal relationship of multituberculates; the cheek teeth are proportionally smaller than those of other Jurassic euharamiyidans; the tooth row length is proportionally short relative to the length of the dentary. See Comparison and Discussion for additional differential features from known ‘haramiyidan’ genera. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Luo et al. 2003, Hopson 1973, Hendy et al. 2009, Carroll 1988 | |||||
Collections
No collection or age range data are available