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Table 1 Values of δ18O and δ13C of South American fossil Hippidion.

From: Ancient feeding ecology inferred from stable isotopic evidence from fossil horses in South America over the past 3 Ma

Species name (age) Specimen Skeletal Altitude Locality (country) Latitude d13C (CO3) d18O (PO4) d18O (CO3)
  number tissue m.asl    ‰ PDB ‰ V-SMOW ‰ V-SMOW
H. devillei (44 to 21 ka BP) MACN 1621 b 1866 Tarija (Bo) 22S -8.8 19.7 26.1
H. devillei (44 to 21 ka BP) MACN 1516 t 1866 Tarija (Bo) 22S -10.8 19.3 28.7
"O". devillei (44 to 21 ka BP)1   e 1866 Tarija (Bo) 22S -6.6   
H.principale (44 to 21 ka BP)1   e 1866 Tarija (Bo) 22S -10.3   
H.principale (44 to 21 ka BP)2   e 1866 Tarija (Bo) 22S -8.8   
H. devillei (12.8 to 11.5 ka BP) MLP 85-VII-1-2 t 4000 Mina Aguilar (Ar) 23S -9.8 17.2 24.1
H. devillei (12.8 to 11.5 ka BP) MLP 85-VII-1-4 b 4000 Mina Aguilar (Ar) 23S -10.0 14.2 25.2
H. devillei (Late Plio) MACN 5361 b 4000 Uquía (Ar) 23S -10.1 16.6 25.6
H. devillei (Late Plio) MACN 5361 t 4000 Uquía (Ar) 23S -10.2 17.4 25.2
H. devillei (Late Plio) MACN 5364 t 4000 Uquía (Ar) 23S -9.9 16.8 25.3
H. devillei (Late Plio) MACN 5364 b 4000 Uquía (Ar) 23S -10.3 16.0 25.9
H. devillei (Early Pl) MACN 2140 t 10 Olivos (Ar) 35S -9.8 21.5 29.8
H. devillei (Early Pl) MACN 2138 t 10 Olivos (Ar) 35S -11.7 20.2 28.8
H. devillei (Early Pl) MACN 2155 b 10 Olivos (Ar) 35S -10.2 19.7 27.7
H. principale (Middle Pl) MLP 6-19 t 10 Paraná (Ar) 32S -8.4 19.4 28.9
H. principale (Middle Pl) MLP 6-19 b 10 Paraná (Ar) 32S -8.7 19.1 29.3
H. principale (Early Pl)3 MLP 6-441 e 10 Buenos Aires (Ar) 35S -12.9   
H. principale (Early Pl)3 MLP 6-435 e 10 Buenos Aires (Ar) 35S -10.2   
H. principale (28 to 10 ka BP) MACN 10441 e 10 Luján (Ar) 35S -10.6 21.2 30.2
H. principale (28 to 10 ka BP) MACN 10441 d 10 Luján (Ar) 35S -12.1 20.9 30.7
H. principale (28 to 10 ka BP) MLP 6-364 b 10 Luján (Ar) 35S -11.3 19.5 30.6
H. principale (28 to 10 ka BP) MACN 6092 b 10 Luján (Ar) 35S -11.2 21.7 30.5
H. principale (28 to 10 ka BP) MACN 5667 t 10 Río Salado (Ar) 36S -12.0 19.8 28.8
H. principale (28 to 10 ka BP) MACN 5667 b 10 Río Salado (Ar) 36S -10.1 19.9 28.3
H. principale (28 to 10 ka BP) MACN 5056 b 10 Río Salado (Ar) 36S -8.2 20.2 30.1
H. principale (28 to 10 ka BP) MACN 1735 t 50 Arroyo Tapalqué (Ar) 38S -9.8 20.2 29.2
H. principale (28 to 10 ka BP) MACN 5265 b 50 Arroyo Tapalqué (Ar) 38S -9.6 20.1 29.1
H. principale (28 to 10 ka BP) MACN 1734 t 50 Arroyo Tapalqué (Ar) 38S -9.4 22.1 31.5
H. principale (28 to 10 ka BP) s/s b 100 Arroyo Tapalqué (Ar) 38S -11.6 19.5 30.8
H. principale (28 to 10 ka BP) MACN 9739 b 100 Río Quequén Salado(Ar) 38S -8.1 21.2 29.9
H. saldiasi (12.8 to 11.5 ka BP) MLP 81-VI-28-5 b 200 U. Esperanza (Ch) 52S -12.2 17.65 24.9
  1. Samples with the same "specimen number" correspond to the same individuals. The bones correspond to the mandibular or maxillary remains that contained the teeth that were analyzed. Plio = Pliocene; Pl = Pleistocene; e = enamel; d = dentine; b = bone; t = tooth (enamel + dentine). Ar = Argentina; Bo = Bolivia; Br = Brazil; Ch = Chile. A = Andean; PL = Plain landscape. 1Taken from MacFadden et al. [22], 2taken from MacFadden and Shockey [27] and 3taken from MacFadden et al. [20].