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Amphechinus minutissimus
Taxonomy
Amphechinus minutissimus was named by Ziegler et al. (2007). Its type specimen is NHMW 2005z0199/0001, a tooth (M1 sup. dext.), and it is not a trace fossil. Its type locality is DEL-B/12, Valley of Lakes, Central Mongolia, which is in an Oligocene terrestrial horizon in the Hsanda Gol Formation of Mongolia.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Amphechinus minutissimus Ziegler et al. p. 104 figs. Fig. 12/9 |
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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.
†Amphechinus minutissimus Ziegler et al. 2007
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. Ziegler et al. 2007 | Smallest Amphechinus species known so far. It differs from all species of the genus in its distinctly smaller size, and it is characterised by the co-occurrence of the following traits: dental formula 2-1-2-3, p2 single-rooted, m3 single-rooted without vestige of a talonid or postcingulid, M1 and M2 without metaconule. |