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Acyon
Taxonomy
Acyon was named by Ameghino (1887) [title: Enumeracion sistematica de las especies de mamiferos fosiles coleccionados por Carlos Ameghino en los terrenos eocenos de la Patagonia austral y depositados en el Museo La Plata]. Its type is Acyon tricuspidatus.
It was synonymized subjectively with Cladosictis by Marshall (1978); it was synonymized subjectively with Anatherium by Marshall (1981).
It was assigned to Acyonidae by Ameghino (1894); and to Hathliacynidae by Forasiepi et al. (2006).
It was synonymized subjectively with Cladosictis by Marshall (1978); it was synonymized subjectively with Anatherium by Marshall (1981).
It was assigned to Acyonidae by Ameghino (1894); and to Hathliacynidae by Forasiepi et al. (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1887 | Acyon Ameghino p. 8 |
| 1894 | Acyon Ameghino p. 140 |
| 2006 | Acyon Forasiepi 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. †Acyon Ameghino 1887
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†Acyon myctoderos Forasiepi et al. 2006
†Acyon tricuspidatus Ameghino 1887
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Invalid names: Anatherium herrerae Marshall 1981 [synonym], Ictioborus destructor Ameghino 1894 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. M. Forasiepi et al. 2006 | largest known hathliacynid (length of skull up to 180 mm; for other hathliacynids see Marshall, 1981); dentary long, low, and gracile; large diastemata separating p1 from canine and p2; premolars strongly laterally compressed; talonids of m1–m3 without entoconid (autapomorphy, character 45). |