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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Doryperimys
Etymology. Dory, from the Greek spear, in relation to the spear-like cross section of the cheek teeth, and Perimys Ameghino, 1887a, an early Miocene chinchilloid. Diagnosis. Small neoepiblemid, size similar to adult speci- mens of Perimys incavatus Ameghino, 1902, with hypselo- dont, biprismatic cheek teeth (triprismatic in M3), with wide interprismatic cement. Differs from species of Perimys by having the following combination of characters: cheek teeth formed by comparatively broader prisms; labial apexes of the lower cheek tooth prisms much sharper (more lanceo- late occlusal contour); posterior prism of m1m2 much more extended lingually than the anterior one; lingual flexid more penetrating in m1 than in m3 (in contrast to species of Perimys); enamel remnant covering the labialmost portion of the anterior wall of the lower molars and the lingualmost portion of the posterior wall of the upper ones.
It was assigned to Neoepiblemidae by Kramarz et al. (2015).
Year | Name and author |
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2015 | Doryperimys Kramarz 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.
Reference | Diagnosis | |
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A. G. Kramarz et al. 2015 | Small neoepiblemid, size similar to adult speci- mens of Perimys incavatus Ameghino, 1902, with hypselo- dont, biprismatic cheek teeth (triprismatic in M3), with wide interprismatic cement. Differs from species of Perimys by having the following combination of characters: cheek teeth formed by comparatively broader prisms; labial apexes of the lower cheek tooth prisms much sharper (more lanceo- late occlusal contour); posterior prism of m1–m2 much more extended lingually than the anterior one; lingual flexid more penetrating in m1 than in m3 (in contrast to species of Perimys); enamel remnant covering the labialmost portion of the anterior wall of the lower molars and the lingualmost portion of the posterior wall of the upper ones. |
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Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
References: Hendy et al. 2009, Ji et al. 2002, Carroll 1988, Lillegraven 1979, Nowak 1999 |
Age range: Colhuehuapian or 21.00000 to 17.50000 Ma
Collections (3 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Colhuehuapian | Argentina (Neuquén) | D. olsacheri (89027 89028 197284) |