Redescription of a small Caviidae (Rodentia: Hystricognathi) from the Neogene of northwestern Argentina and its systematic implications
Author
Jaén, María Carolina Madozzo
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Superior de Correlación Geológica (INSUGEO), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205, T 4000 JFE, San Miguel de Tucumán (Argentina) cmadozzo @ csnat. unt. edu. ar (corresponding author)
cmadozzo@csnat.unt.edu.ar
Author
Pérez, María Encarnación
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Museo Paleontológico Egidio Feruglio (MEF), Avenida Fontana 140, Trelew, U 9100 GYO Chubut (Argentina) mperez @ mef. org. ar
mperez@mef.org.ar
text
Comptes Rendus Palevol
2024
2024-08-08
23
20
269
292
http://dx.doi.org/10.5852/cr-palevol2024v23a20
journal article
305519
10.5852/cr-palevol2024v23a20
7670d934-3421-4044-9c4f-f3ed409dba77
1777-571X
13269380
urn:lsid:zoobank.org:pub:15C1CD83-2D0A-42FE-B630-B322F93E799D
TABLE 2. — Compared measurements (in mm) of the upper molariforms of Orthomyctera rigens (Ameghino, 1888) and Orocavia andina n. comb. Abbreviations: APL, anteroposterior length; LLA, anteroposterior length of anterior lobe; LPL, anteroposterior length of posterior lobe. Abbreviations: L, left; R, right. | Orthomyctera | | | | | | | | | | | | |
|---|
| | rigens | | | | | Orocavia andina n. comb. | | | | | |
|---|
| Mesures | Side | MACN-A 1661 (holotype) | MACN 8350 (holotype) | FNMH-P 14370 | FNMH-P 14464 | MACN-Pv 8351 | MACN - Pv 8399 | MACN-Pv 8401 | MACN-Pv 8402 | MACN-Pv 8403 | MACN-Pv 8404 | MACN-Pv 8409 | MCH-P 90 | MCH-P 91 | PVL 4892 |
|---|
| APL dental | R | – | 12.44 | 13.73* | – | 13.24 | 11.63 | 10.60 | 10.78 | – | – | – | 11.265 | – | – |
|---|
| series | L | 14.54 | – | 13.84 | 11.99 | 12.93 | 12.33 | 10.68 | – | 14.052 | 11.65 | – | – | – | 11.86 |
|---|
| APL P4 | R | 3.28 | – | 3.35* | – | 3.13 | 2.65 | 2.22 | 2.18 | 3.24 | – | – | 2.33 | – | – |
|---|
| L | 3.24 | 2.64 | 2.58* | 2.64 | 2.81 | 2.83 | 2.11 | 2.20 | 3.12 | 1.97 | – | – | – | 2.86 |
|---|
| LLA | R | 1.59 | 1.39 | 1.75* | – | 1.68 | 1.33 | 1.09 | 1.06 | 1.67 | – | – | 1.08 | – | |
|---|
| L | 1.58 | 1.20 | 1.25 | 1.22 | 1.51 | 1.53 | 1.00 | 1.20 | 1.51 | – | – | – | – | 1.51 |
|---|
| LPL | R | 1.42 | – | 1.38* | – | 1.28 | 1.14 | 1.00 | 0.95* | 1.33 | – | – | 1.07 | – | |
|---|
| L | 1.47 | 1.17 | 1.273 | 1.22 | 1.14 | 1.17 | 1.00 | 0.94* | 1.38 | – | – | – | – | 1.27 |
|---|
| APL M 1 | R | 3.03 | 2.53 | 2.98 | – | 2.74 | 2.47 | 2.45 | 2.18 | 3.20 | 2.99 | – | 2.53 | 2.86 | |
|---|
| L | 3.02 | 2.64 | – | 2.70 | 2.71 | 2.57 | 2.38 | 2.28 | 3.01 | 2.61 | 2.23 | – | – | 2.49 |
|---|
| LLA | R | 1.55 | 1.12 | – | – | 1.37 | 1.25 | 1.19 | 1.08 | 1.55 | 1.48 | – | 1.19 | 1.34 | |
|---|
| L | 1.45 | 1.18 | 1.34 | 1.29 | 1.30 | 1.24 | 1.19 | 1.02 | 1.45 | 1.15 | 1.02 | – | | 1.13 |
|---|
| LPL | R | 1.66 | 1.20 | 1.35 | – | 1.23 | 1.23 | 1.16 | – | 1.44 | 1.18 | 1.15 | 1.25 | 1.15 | |
|---|
| L | 1.54 | 1.19 | 1.47 | 1.25 | 1.37 | 1.19 | 1.05 | 1.14 | 1.33 | 1.24 | 1.17 | – | – | 1.18 |
|---|
| APL M2 | R | 3.44 | 2.66 | 2.98 | – | 2.89 | 2.54 | – | – | 3.17 | – | 2.64 | 2.77 | 3.11 | – |
|---|
| L | 3.40 | 2.77 | 2.93 | 2.81 | 2.86 | 2.74 | 2.60 | 2.20 | 3.11 | 2.85 | 2.62 | – | – | 2.77 |
|---|
| LLA | R | 1.65 | 1.21 | 1.39 | – | 1.36 | 1.28 | – | 1.22 | 1.49 | – | 1.25 | 1.31 | 1.29 | – |
|---|
| L | 1.96 | 1.20 | 1.42 | 1.28 | 1.33 | 1.23 | 1.23 | 0.95* | 1.51 | 1.33 | 1.26 | – | – | 1.30 |
|---|
| LPL | R | – | 1.26 | 1.33 | – | 1.40 | 1.24 | – | – | 1.51 | – | 1.25 | 1.33 | 1.55 | – |
|---|
| L | 1.70 | 1.34 | 1.33 | 1.39 | 1.36 | 1.32 | 1.24 | 0.99* | 1.49 | 1.08 | 1.18 | – | – | 1.27 |
|---|
| APL M3 | R | – | 3.69 | 4.09 | – | 4.35 | 4.15 | 3.70 | 3.54 | | | 3.18* | 3.70 | – | – |
|---|
| L | 5.18 | 3.92 | 4.42 | 3.85 | 4.12 | 4.35 | 3.53 | 2.71* | 4.48 | 4.22 | 3.38 | – | – | 3.70 |
|---|
| LLA | R | – | 1.10 | 1.20 | – | 1.28 | 1.35 | 1.21 | 1.07 | – | – | 1.14 | – | – | – |
|---|
| L | 1.79 | 1.11 | 1.21 | 1.26 | 1.30 | 1.31 | 1.19 | – | 1.41 | 1.35 | 1.17 | – | – | 1.23 |
|---|
| LPL | R | – | 2.42 | 2.66* | – | 2.95 | 2.77 | 2.35 | 2.35 | – | – | 1.91* | – | – | – |
|---|
| L | 3.30 | 2.54 | 3.04 | 2.37 | 2.66 | 2.95 | 2.31 | – | 2.89 | 2.80 | 2.03 | – | – | 2.24 |
|---|
| angle of the M3 | – | – | 87.46° | – | – | 107.47° | 74.41° | 123.25° | 102.23° | 108.34° | 111.46° | – | – | – | – |
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