| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Acrecebus was named by Kay and Cozzuol (2006). Its type is Acrecebus fraileyi.
It was assigned to Cebidae by Kay and Cozzuol (2006).
It was assigned to Cebidae by Kay and Cozzuol (2006).
Species
A. fraileyi (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Acrecebus Kay and Cozzuol |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. F. Kay and M. A. Cozzuol 2006 | With an M2 area of 74.8 mm2, (MD length 7.75 mm; BL breadth 9.65 mm), Acrecebus has an M2 larger than the means for any living platyrrhine. In a sample of 92 specimens from seven species, Alouatta M2s average 59.2 mm2 and range from 37.5 to 79.8 mm2; for ten Brachyteles arachnoides spec- imens, the mean and range are 55.3 mm2 and 37.3e64.4 mm2. (Kay and Frailey, 1993). Acrecebus can be further distin- guished from atelines (extant Ateles, Brachyteles, and Lago- thrix) and alouattines (extant Alouatta and Miocene Stirtonia) in having a larger hypocone and a very strongly de- veloped metaconule. Unlike in any alouattine, the crown’s cusps are inflated and the sides of the tooth are puffy, rather than straight-sided, and the occlusal surface of the crown is correspondingly restricted. Furthermore, unlike in alouattines, shearing crests are poorly developed; in particular, the preme- tacrista and postparacrista are short, straight, and blunt and lack a buccal cingulum or mesostyle. In the above combination of features, Acrecebus most closely resembles extant Cebus. Additionally, as in Cebus, the strong metaconule is connected distally by a crest to the hypocone. The tooth differs from those of Cebus in having a better developed lingual cingulum, a more squared crown shape, and in being three to four times larger (in a sample of 51 specimens of Cebus capucinus, M2s average 22.12 mm2 with a range of 18.67e25.19 mm2. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009, Nowak 1991 | |||||
Age range: base of the Huayquerian to the top of the Tortonian or 8.00000 to 7.24600 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tortonian | Brazil (Acre) | A. fraileyi (55602) | |
| Late/Upper Miocene | Brazil (Acre) | A. fraileyi (136714) | |
| Huayquerian | Bolivia (Pando) | A. fraileyi (134868) |