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Micropternodus borealis
Taxonomy
Micropternodus borealis was named by Matthew (1903). Its type specimen is AMNH 9602, a mandible (a lower jaw with p3-m3 and alveoli of the anterior teeth), and it is a 3D body fossil. Its type locality is Pipestone Springs, which is in a Chadronian terrestrial claystone in the Renova Formation of Montana. It is the type species of Micropternodus.
Entered
by J. Alroy on 2003-01-23; modified by J. Marcot on 2016-04-01
Synonymy list
| Year | Name and author |
|---|---|
| 1903 | Micropternodus borealis Matthew p. 204 fig. 3 |
| 1930 | Micropternodus borealis Hay p. 427 |
| 2022 | Micropternodus borealis Korth 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.
†Micropternodus borealis Matthew 1903
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. D. Matthew 1903 | Dentition /3.1.3.3. Molars somewhat like those of Centetes in composition, with high trigonid and small, low talonid. Trigonid very wide transversely with prd considerably overtopping pad and med. Talonid with sharp posterior margin and low median ridge. Molars and especially premolars, short, high, and recurved; p4 sub-molariform, with small anterior and internal trigonid cusps and strong basal heel. P1 much smaller and simpler, with small heel and no other accessory cusps. P2 is small and one-rooted, canine small, incisors small, subequal. No diastemata except a slight one behind p2. Jaw rather deep in front. Second molar slightly larger than the first, third much smaller. |