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Eobaatar magnus
Taxonomy
Eobaatar magnus was named by Kielan-Jaworowska et al. (1987). Its type specimen is Institute of Palaeontology, Academy of Sciences, Moscow PIN 3101/57, a tooth (p4 sin.), and it is a 3D body fossil. Its type locality is Khovboor (PIN coll. 3101) [SMPE], which is in an Aptian/Albian lacustrine sandstone/claystone in the Dzunbain Formation of Mongolia. It is the type species of Eobaatar.
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Eobaatar magnus Kielan-Jaworowska et al. p. 8 figs. Pl. 1 fig. 1 |
| 2004 | Eobaatar magnus Kielan-Jaworowska et al. pp. 254, 317 |
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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.
†Eobaatar magnus Kielan-Jaworowska et al. 1987
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Z. Kielan-Jaworowska et al. 1987 | Estimated length of the skull about 3 cm. p4 with 9-10 serrations with ridges; V-shaped groove above the basal cusp. Ventral margin of exodaenodont lobe V-shaped. p4 3.1-3.6 mm long. Cusps 4:2 on m1 and 3:2 on m2. The second buccal cusp on m1 larger than others, the first lingual cusp subdivided medially. Ultimate buccal cusp on m2 subdivided medially by comma-shaped grooves. P1-P4 with 3-4 cusps. ?P4 with 3:4 cusps; ?P5 with 2:4 cusps; M1 with 3:4 cusps and crescentic wing; M2 with 1:3:3 cusps and straigh anterior margin; anterior rim enlarged in the middle and reaching the first medial cusp. Lower molars ornamented with comma-shaped grooves; upper premolars and M1 ornamented with prominent striae, on M2 only natreolateral wing and lateral side of middle medial cusp ornamented with grooves and striae. |
Measurements
No measurements are available
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| Source: o = order, c = class, subp = subphylum | |||||
| References: Carroll 1988, Jenkins and Krause 1983, Hendy et al. 2009, Hopson 1973 | |||||
Age range: base of the Late/Upper Aptian to the top of the Early/Lower Albian or 122.46000 to 109.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Aptian - Early/Lower Albian | Mongolia (Övörkhangai Aymag) | Eobaatar magnus (type locality: 77191) |