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Eoconodon nidhoggi
Taxonomy
Eoconodon nidhoggi was named by Van Valen (1978).
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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.
†Eoconodon nidhoggi Van Valen 1978
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. A. Clemens 2011 | As far as they are known the lengths and widths of the molars are smaller than of those of the other species of Eoconodon except E. ginibitohia. Dimensions of m2 and m3 of the type and only specimen of E. ginibitohia are either slightly smaller than or fall within the lower end of the observed ranges of variation in the small samples of homologous teeth of E. nidhoggi (Table 1). The m2 and m3 of E. nidhoggi are distinguishable from those of E. ginibitohia by: 1) relatively larger paraconids; 2) talonid cusps of m2 and, probably, m3 are relatively larger and more distinct; 3) the basal cingulid is better developed and complete across the labial side of the trigonid, and 4) the talonid of m3 is broader than its trigonid. E. nidhoggi resembles E. coryphaeus in the greater length of m3 relative to m2. In E. ginibitohia the length of m3 is slightly smaller (99%) than that of m2. In contrast, the mean length of m3 of the new species described below is distinctly shorter (77%) than that of m2. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Tabuce et al. 2011, Carroll 1988, Hendy et al. 2009, Lillegraven 1979, Ji et al. 2002 | |||||