TABLE 1 in Icaphoca choristodon n. gen., n. sp., a new monachine seal (Carnivora, Mammalia) from the Neogene of Peru

TABLE 1. — Comparative measurements of the holotype cranium (MNHN.F.PPI 270a) of Icaphoca choristodon n. gen., n. sp. in comparison with other Monachinae and selected Phocinae. Abbreviations: BCW, bicondylar width; BZW, bizygomatic width; e, estimate; 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; WRPP, width of rostrum at preorbital processes. Measurements in mm. SpecimenBZWMPWWRPPPLWM1BCWGLFWIcaphoca choristodon n. gen., n. sp. (MNHN.F.PPI270a)–70.3 × 2 = 140.6e–31.1 × 2 = 62.2e29.6 × 2 = 59.2e–Other extinct MonachinaeAcrophoca longirostris (MNHN.F.SAS563)63 × 2 = 126e38.75 × 2 = 77.5e–41.231.5 × 2 = 63e63 × 2 = 126eAcrophoca longirostris (MNHN.F.SAS1654)66 × 2 = 132e58 × 2 = 116e57e–30.5 × 2 = 61e60 × 2 =120eHadrokirus martini (MUSM 1662)140122113.666.647e129.2Hadrokirus martini (MUSM 340)200.5170.5–87.571.1190.6Homiphoca capensis (SAM-PQ-L30080)145128.585.36157.5130.5Magophoca brevirostris (MNHN.F.PPI276; male)–––31.9 × 2 = 63.8–Magophoca brevirostris (MNHN.F.PPI277; female?)132e120.7––58.3122.6Magophoca brevirostris (MNHN.F.PPI269; female?)136129.549e63e60.3130Piscophoca pacifica (MNHN.F.SAS564)152139e72.569.263.8144.1Extant MonachiniMonachus monachus (USNM 219059)194.8172.671.171.462.4183Monachus monachus (MNHN-ZM-AC-A7953)214181.58176.571.2191Neomonachus schauinslandi (USNM 243838; male)157.4158.647.968.260.7152.6Neomonachus schauinslandi (USNM 243839; female)155.9152.350.871.562148.2Neomonachus tropicalis (USNM 100363; male)167147.646.371.462.4157.4Neomonachus tropicalis (USNM 100371; female)167.3147.949.473.365.3154.7Extant LobodontiniHyrdrurga leptonyx (USNM 396931)219.6184.1108.595.275.8205.9Hydrurga leptonyx (USNM 550360; male)190193.498.478.780.6193.4Leptonychotes weddellii (USNM 269526; male)154.7174.149.152.675.5154.2Leptonychotes weddellii (USNM 269526; female)165.5172.149.657.377.6160.5Leptonychotes weddellii (USNM 395811)152.9170.651.751.774.0153.4Lobodon carcinophaga (USNM 550080; female)131.7147.876.461.776.3136.3Lobodon carcinophaga (USNM 550083; male)140152.880.162.778.9138.6Ommatophoca rossii (USNM 275206; male)160.3160.475.958.679.0150.1Ommatophoca rossii (USNM 339989; female)151.9157.571.353.477.4146.1Extant PhocinaePagophilus groenlandicus (USNM 188790; male)111.3111.63043.758105.4Pagophilus groenlandicus (USNM 188791; female)102.8109.7274557.6101.2Phoca vitulina concolor (USNM 504298; male)130.4125.134.354.556.1114Phoca vitulina concolor (USNM 593947; female)126.3117.533.449.458.6109.3Phoca vitulina concolor (USNM 594207; female)125.8114.927.855.255.5106.7