Figure 1
Holotype of Muknalia minima (PQR2011-PALMAS-V-1, left dentary). Occlusal view (A) showing 10 mm scale brackets on m1 and m2. Left lateral view (B) showing enlarged striated and polished surfaces in C, D, and E. Both D and E are oblique postero-medial views. Posterior view (F) showing enlarged polished surface (G) of remaining condyloid region. All arrows point to the same location, the vertex of the ~110 degree angle of the broken ramus. Scale bar distances and images A, B, and F are from Stinnesbeck et al. (2017c).
Table 1
Dentary measurements (in mm) of “Muknalia minima” (Stinnesbeck et al. 2017c), samples of Pecari tajacu yucatanensis from the Yucatán and Pecari tajacu nanus from Quintana Roo, and a large comparative sample of Pecari tajacu (Woodburne, 1968).
| Taxon/Reference | Specimen #/Sample | Locality | Dentary L | Dentary H | Dentary depth at m1 | Diastema L | Tooth row L c1 to m3 | Cheek tooth row L p2 to m3 |
|---|---|---|---|---|---|---|---|---|
| “Muknalia minima” Stinnesbeck et al. 2017 | PQR2011-PALMAS-V-1 | Muknal Cave, Quintana Roo, Mexico | 138.5 | 70 | 33 | 21 | 105 | 69 |
| Pecari tajacu yucatanensis | Mean (n = 4) | Yucatán, Mexico | 138.32 | 71.62 | 30.87 | 25.93 | 97.81 | 62.94 |
| Minimum | 133.44 | 68.84 | 27.45 | 22.7 | 93.53 | 61.53 | ||
| Maximum | 144.42 | 75.2 | 33.05 | 28.69 | 102.77 | 65.63 | ||
| Pecari tajacu nanus | Mean (n = 4) | Cozumel Island, Quintana Roo, Mexico | 121.47 | 64.11 | 28.05 | 22.82 | 85.64 | 54.23 |
| Minimum | 113.21 | 59.92 | 25.72 | 21.68 | 80.78 | 51.63 | ||
| Maximum | 128.79 | 67.94 | 31.26 | 23.9 | 88.13 | 56.42 | ||
| Pecari tajacu Woodburne, 1968 | Mean (n = 71) | Various | 75.25 | 24.69 | 69.49 | |||
| Minimum | 65 | 17.6 | 61.5 | |||||
| Maximum | 83.1 | 38.4 | 76.05 |
Table 2
Cheek tooth measurements (in mm) of “Muknalia minima” (Stinnesbeck et al. 2017c), samples of Pecari tajacu yucatanensis from the Yucatán and Pecari tajacu nanus from Quintana Roo, and a large comparative sample of Pecari tajacu (Woodburne, 1968). Note that p2 and p3 measurements of Stinnesbeck et al. (2017c) are of the tooth alveolus, and the value for m3W includes a range from posterior to anterior widths.
| Taxon/Reference | Specimen #/Sample | Locality | p2L | p2W | p3L | p3W | p4L | P4W | m1L | m1W | m2L | m2W | m3L | m3W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| “Muknalia minima” Stinnesbeck et al. 2017 | PQR2011-PALMAS-V-1 | Muknal Cave, Quintana Roo, Mexico | 6.2 (alv) | 3–4 (alv) | 8 (alv) | 5–6.2 (alv) | 10.1 | 8.5 | 10.15 | 8.1 | 12 | 9 | 18.3 | 6.5–9.75 |
| Pecari tajacu yucatanensis | Mean (n = 4) | Yucatán, Mexico | 7.23 | 4.03 | 8.67 | 5.35 | 10.31 | 8.31 | 10.84 | 8.88 | 12.38 | 10.34 | 15.42 | 9.72 |
| Minimum | 6.85 | 3.57 | 8.51 | 4.98 | 9.9 | 7.7 | 10.16 | 8.61 | 12.08 | 10.07 | 14.82 | 9.42 | ||
| Maximum | 7.88 | 4.4 | 8.85 | 5.85 | 10.55 | 8.72 | 11.28 | 9.43 | 12.61 | 10.74 | 15.91 | 9.86 | ||
| Pecari tajacu nanus | Mean (n = 4) | Cozumel Island, Quintana Roo, Mexico | 5.00 | 2.95 | 7.36 | 4.48 | 8.70 | 6.44 | 9.33 | 7.47 | 10.27 | 8.72 | 13.64 | 8.41 |
| Minimum | 3.95 | 2.61 | 6.88 | 4.19 | 7.72 | 6.17 | 9.16 | 7.03 | 9.85 | 8.38 | 13.35 | 8.25 | ||
| Maximum | 5.88 | 3.37 | 7.6 | 4.85 | 10.75 | 6.67 | 9.45 | 7.94 | 11.08 | 9.15 | 13.81 | 8.78 | ||
| Pecari tajacu Woodburne, 1968 | Mean (n = 71) | Various | 8.05 | 4.67 | 9.11 | 6.05 | 10.66 | 8.65 | 11.8 | 9.68 | 13.27 | 11.37 | 17.31 | 10.87 |
| Minimum | 7.1 | 3.8 | 7.6 | 5.15 | 9 | 6.35 | 10.3 | 8 | 12 | 9.75 | 12.3 | 9.45 | ||
| Maximum | 8.95 | 5.45 | 10.35 | 7.2 | 12.4 | 9.95 | 13.3 | 10.8 | 14.95 | 13 | 20.5 | 12.4 |
Figure 2
Muknalia minima holotype (A) and Peccary tajacu comparisons (B–D) in left lateral view. Pecari tajacu yucatanensis (B, USNM 108515); Pecari tajacu nanus (C, USNM 108514; D, USNM 108513). Scale bar size and Muknal dentary (A) from Stinnesbeck et al. (2017c).