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Saykanomys
Taxonomy
Saykanomys was named by Shevyreva (1972). It is not extant.
It was synonymized subjectively with Advenimus by Dashzeveg (1990).
It was assigned to Chapattimyinae by Averianov (1996); to Stelmomyinae by Tong (1997); to Ctenodactylidae by Hartenberger (1982), McKenna and Bell (1997); to Chapattimyidae by Thewissen et al. (2001); and to Ctenodactyloidea by Li and Meng (2015).
It was synonymized subjectively with Advenimus by Dashzeveg (1990).
It was assigned to Chapattimyinae by Averianov (1996); to Stelmomyinae by Tong (1997); to Ctenodactylidae by Hartenberger (1982), McKenna and Bell (1997); to Chapattimyidae by Thewissen et al. (2001); and to Ctenodactyloidea by Li and Meng (2015).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1972 | Saykanomys Shevyreva |
| 1982 | Saykanomys Hartenberger p. 24 |
| 1996 | Saykanomys Averianov |
| 1997 | Saykanomys McKenna and Bell |
| 1997 | Saykanomys Tong |
| 2001 | Saykanomys Thewissen et al. p. 353 |
| 2015 | Saykanomys Li 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.
G. †Saykanomys Shevyreva 1972
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J.L. Hartenberger 1982 | brachyodont ctenodactylid; slender lower jaw; P4 as large as M1; cusps of the upper teeth high and sharp with an incomplete protoloph; hypocone smaller than protocone; p4 very elongated; mesoconid of m1 and m2 nearly complete. |
Measurements
No measurements are available
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1999, Hendy et al. 2009, Lillegraven 1979, Ji et al. 2002, Carroll 1988 | |||||
Age range: base of the Ypresian to the top of the Late/Upper Eocene or 56.00000 to 33.90000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ypresian | Kyrgyzstan (Osh) | S. bohlini (28490) | |
| Irdinmanhan | Kazakhstan | S. bohlini (177047 177048) | |
| Lutetian | India (Jammu and Kashmir) | Advenimus bohlini (31299) | |
| Lutetian | Pakistan (Punjab) | S. chalchae (49002) | |
| Middle Eocene | Pakistan (Punjab) | S. chalchae (87965) | |
| Middle Eocene | India (Himachal Pradesh) | Advenimus bohlini (31036) | |
| Middle Eocene | Mongolia | Advenimus bohlini (127656) | |
| Late/Upper Eocene | China (Nei Mongol) | Advenimus bohlini (174913) | |
| Late/Upper Eocene - Early/Lower Oligocene | China (Henan) | S. bohlini (174738) |