Published February 15, 2024
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TABLE 2 in A new monachine seal (Monachinae, Phocidae, Mammalia) from the Miocene of Cerro La Bruja (Ica department, Peru)
Authors/Creators
- 1. Directorate of Earth and History of Life, Royal Belgian Institute of Natural Sciences, 29 Rue Vautier, Brussels 1000 (Belgium) and FunMorph Lab, Department of Biology, Antwerp University, Campus Drie Eiken, 1 Universiteitsplein, Antwerp 2610 (Belgium) and EDDy Lab, Department of Geology, Liège University, Quartier Agora, 14 Allée du six Août, Liège 4000 (Belgium)
- 2. Départment Origines et Évolution, CR 2 P URM 7207 (MNHN, CNRS, Sorbonne Université), Muséum national d'Histoire naturelle, 57 rue Cuvier, 75231 Paris cedex 05 (France)
Description
TABLE 2. — Comparative measurements (in mm) of the crania of Magophoca brevirostris n. gen., n. sp. in comparison with other Monachinae and selected Phocinae. Abbreviations: BZW, bizygomatic width; BCW, bicondylar width; GLFW, width at level of lateral edges of glenoid fossae; MPW, width between mastoid processes; PLWM1, palate width at level of posterior root of M1s; WAC, maximum width of alveolus of upper canine; WRPP, width of rostrum at preorbital processes; e, estimate.
| Specimen | BZW | MPW | WRPP | PLWM1 | BCW | GLFW |
|---|---|---|---|---|---|---|
| Magophoca brevirostris n. gen., n. sp. | – | – | – 31.9 × 2 = 63.8 – | – | ||
| (MNHN.F.PPI276; male) | ||||||
| Magophoca brevirostris n. gen., n. sp. | – | – | – | – | – | – |
| (MNHN.F.PPI278; male?) | ||||||
| Magophoca brevirostris n. gen., n. sp. | 132e | 120.7 | – | – | 58.3 | 122.6 |
| (MNHN.F.PPI277; female?) | ||||||
| Magophoca brevirostris n. gen., n. sp. | 136 | 129.5 | 49e | 63e | 60.3 | 130 |
| (MNHN.F.PPI269; female?) | ||||||
| Other extinct Monachinae | ||||||
| Acrophoca longirostris (MNHN.F.SAS563) | 63 × 2 = 126e | 38.75 × 2 = | – | 41.2 | 31.5 × 2 = 63e 63 × 2 = 126e | |
| 77.5e | ||||||
| Acrophoca longirostris (MNHN.F.SAS1654) | 66 × 2 = 132e 58 × 2 = 116e | 57e | – | 30.5 × 2 = 61e 60 × 2 = 120e | ||
| Hadrokirus martini (MUSM 1662) | 140 | 122 | 113.6 | 66.6 | 47e | 129.2 |
| Hadrokirus martini (MUSM 340) | 200.5 | 170.5 | – | 87.5 | 71.1 | 190.6 |
| Homiphoca capensis (SAM-PQ-L30080) | 145 | 128.5 | 85.3 | 61 | 57.5 | 130.5 |
| Piscophoca pacifica (MNHN.F.SAS564) | 152 | 139e | 72.5 | 69.2 | 63.8 | 144.1 |
| Extant Monachini | ||||||
| Monachus monachus (USNM 219059) | 194.8 | 172.6 | 71.1 | 71.4 | 62.4 | 183.0 |
| Monachus monachus (MNHN-ZM-AC-A7953) | 214 | 181.5 | 81 | 76.5 | 71.2 | 191 |
| Neomonachus schauinslandi (USNM 243838; male) | 157.4 | 158.6 | 47.9 | 68.2 | 60.7 | 152.6 |
| Neomonachus schauinslandi (USNM 243839; female) 155.9 | 152.3 | 50.8 | 71.5 | 62.0 | 148.2 | |
| Neomonachus tropicalis (USNM 100363; male) | 167.0 | 147.6 | 46.3 | 71.4 | 62.4 | 157.4 |
| Neomonachus tropicalis (USNM 100371; female) | 167.3 | 147.9 | 49.4 | 73.3 | 65.3 | 154.7 |
| Extant Lobodontini | ||||||
| Hyrdrurga leptonyx (USNM 396931) | 219.6 | 184.1 | 108.5 | 95.2 | 75.8 | 205.9 |
| Hydrurga leptonyx (USNM 550360; male) | 190.0 | 193.4 | 98.4 | 78.7 | 80.6 | 193.4 |
| Leptonychotes weddellii (USNM 269526; male) | 154.7 | 174.1 | 49.1 | 52.6 | 75.5 | 154.2 |
| Leptonychotes weddellii (USNM 269526; female) | 165.5 | 172.1 | 49.6 | 57.3 | 77.6 | 160.5 |
| Leptonychotes weddellii (USNM 395811) | 152.9 | 170.6 | 51.7 | 51.7 | 74.0 | 153.4 |
| Lobodon carcinophaga (USNM 550080; female) | 131.7 | 147.8 | 76.4 | 61.7 | 76.3 | 136.3 |
| Lobodon carcinophaga (USNM 550083; male) | 140.0 | 152.8 | 80.1 | 62.7 | 78.9 | 138.6 |
| Ommatophoca rossii (USNM 275206; male) | 160.3 | 160.4 | 75.9 | 58.6 | 79.0 | 150.1 |
| Ommatophoca rossii (US3NM 339989; female) | 151.9 | 157.5 | 71.3 | 53.4 | 77.4 | 146.1 |
| Extant Phocinae | ||||||
| Pagophilus groenlandicus (USNM 188790; male) | 111.3 | 111.6 | 30.0 | 43.7 | 58.0 | 105.4 |
| Pagophilus groenlandicus (USNM 188791; female) | 102.8 | 109.7 | 27.0 | 45.0 | 57.6 | 101.2 |
| Phoca vitulina concolor (USNM 504298; male) | 130.4 | 125.1 | 34.3 | 54.5 | 56.1 | 114.0 |
| Phoca vitulina concolor (USNM 593947; female) | 126.3 | 117.5 | 33.4 | 49.4 | 58.6 | 109.3 |
| Phoca vitulina concolor (USNM 594207; female) | 125.8 | 114.9 | 27.8 | 55.2 | 55.5 | 106.7 |
Notes
Published as part of Dewaele, Leonard & Muizon, Christian de, 2024, A new monachine seal (Monachinae, Phocidae, Mammalia) from the Miocene of Cerro La Bruja (Ica department, Peru), pp. 38 in Geodiversitas 46 (3) on page 38, DOI: 10.5252/geodiversitas2024v46a3, http://zenodo.org/record/10671140
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