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Sinobaatar
Taxonomy
Sinobaatar was named by Hu and Wang (2002) [named in Chinese language version]. Its type is Sinobaatar lingyuanensis.
It was assigned to Eobaataridae by Hu and Wang (2002), Kielan-Jaworowska et al. (2004), Kusuhashi et al. (2009), Zhou and Wang (2010); and to Multituberculata by Bi et al. (2014).
It was assigned to Eobaataridae by Hu and Wang (2002), Kielan-Jaworowska et al. (2004), Kusuhashi et al. (2009), Zhou and Wang (2010); and to Multituberculata by Bi et al. (2014).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Sinobaatar Hu and Wang |
| 2004 | Sinobaatar Kielan-Jaworowska et al. pp. 254, 318 figs. 8.34A, 8.35A |
| 2009 | Sinobaatar Kusuhashi et al. p. 1266 figs. 3-7 |
| 2010 | Sinobaatar Zhou and Wang |
| 2014 | Sinobaatar Bi et al. |
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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. †Sinobaatar Hu and Wang 2002
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†Sinobaatar fuxinensis Kusuhashi et al. 2009
†Sinobaatar lingyuanensis Hu and Wang 2002
†Sinobaatar xiei Kusuhashi et al. 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. Kusuhashi et al. 2009 | Dental formula 3?.0.5.2/1.0.3.2; lower incisor gracile, completely covered with enamel; p2 singlerooted, peg-like; p3 double-rooted, crown shape oval rather than triangular or rectangular in lateral view; p4 having eight to 11 serrations and one posterior labial cusp; m1 cusp formula 3-4:2 (labial:lingual); m2 cusp formula 1 (coalesced):2; I2 simple conical but somewhat stout; I3 single-rooted, transversely wide and longitudinally compressed, situated at lateral margin of premaxilla; P1 to P3 having three cusps triangularly arranged (cusp formula 1:2); P3 smaller than P1 and P2; P4 cusp formula 2-3:4; P5 having three main cusps anteroposteriorly arranged; M1 having posterolingual wing, cusp formula 4:4; M2 cusp formula 3:3-4. Differing from Eobaatar in lower incisor completely covered with enamel, cusp formula and morphology of P4 and P5. Differing from Hakusanobaatar in cusp formula of P4 and P5. Differing from Janumys in having posterolingual wing of M1. Differing from Loxaulax in relatively straight anterior margin of M2 and cusp formula of m1. Differing from Monobaatar in P3 smaller than P1 and P2. Differing from Parendotherium in simple conical shape of I2. Differing from Tedoribaatar in having p2 and double rooted p3. |
Measurements
No measurements are available
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| Source: o = order, c = class, subp = subphylum | |||||
| References: Jenkins and Krause 1983, Hopson 1973, Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Aptian to the top of the Early/Lower Aptian or 125.00000 to 122.46000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Barremian - Early/Lower Aptian | China (Liaoning) | S. lingyuanensis (13937) | |
| Aptian - Albian | China (Liaoning) | S. fuxinensis (36971) S. xiei, S. fuxinensis (123517) |