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FIGURE 4 in On the type materials of the genera Interatherium Ameghino, 1887 and Icochilus Ameghino, 1889 (Interatheriidae, Notoungulata, Mammalia) from early Miocene of the Santa Cruz Province, Argentina
FIGURE 4. Icochilus robustus, holotype MACN-A 3454, skull, in dorsal view (A); reproduction of figure 97 (B) from Ameghino (1891). Icochilus senilis, holotype MACN-A 3596, incomplete skull, in ventral view (C); holotype MACN-A 3597, incomplete mandible, in dorsal view (D). Scale bar = 10 mm.
Figure 11 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 11. Scheme of the chronostratigraphic correlations of the different sections of the SCF at the different regions (east or the Atlantic coast, centre or Río Santa Cruz, and the west), and the precise inferred temporal distribution of the Santacrucian species of Protypotherium. The vertical extension of the columns represents time (Mya). Abbreviations: BB, Barrancas Blancas; CO, Cerro Observatorio; CS, Cañadón Silva; ELC, Ea. La Costa; Ka, Karaikén; ḎN, Killik Aike Norte; ML, Monte León; MT, Monte Tigre; PLC, Puesto Ea. La Costa; RB, Río Bote; SBB, Segundas Barrancas Blancas; YH, Yaten Huageno.
Figure 10 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 10. Temporal distribution of the subfamily Interatheriinae based on the phylogenetic hypothesis shown in Figure 9. South American Land Mammal Ages asser Reguero and Prevosti (2010), Woodburne et al. (2014), and Cuitiño et al. (2016). Abbreviations: C, Colloncuran; Ch, Chasicoan; Co, Colhuehuapian; De, Deseadan; F, Friasian; Hu, Huayquerian; La, Laventan; Ma, 'Mayoan'; Mo, Montehermosan; Mu, Mustersan; Sa, Santacrucian; Ti, Tinguirirican.
Figure 9. Strict consensus tree from the 24 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 9. Strict consensus tree from the 24 MPTs (331 steps) obtained under equally weighted characters. Numbers enclosed in boxes indicate Bremer support (above) and Bootstrap resampling frequencies (below; absolute: top, and GC: boưom).
Figure 4 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 4. Protypotherium antiquum, in occlusal view: (A) ZMK 21/1877, right mandibular fragment with p4–m3; (B) IBIGEO-P 39, less mandibular fragment with p4–m3. Protypotherium australe, in occlusal view: (C) MACN-A 1338 (cast), less maxillary fragment with P3 (broken)–M3. Protypotherium praerutilum, in occlusal view: (D) MACN-A 1081, incomplete skull; (E) MACN-A 3920, complete skull; (F) AMNH 9565, incomplete skull. Protypotherium australe, in occlusal view: (G) MACN-A 9644, incomplete skull. ' indicates broken tooth. Scale bar = 10 mm.
Figure 8 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 8. Protypotherium praerutilum, in occlusal view. A, MACN-A 4044, incomplete palate. Protypotherium claudum, in occlusal view. B, MACN-A 551, right mandibular fragment with p2 (alveolus)–p3–m2; (C) MLP 73-VII-6-4 d, less mandibular fragment with p2 (broken)–m2 (trigonid); (D) MPEF-PV 1394, incomplete mandible with less i1–dp1–p2–p4, and right i1 and dp1–p2–m3. Protypotherium compressidens, in occlusal view. E, MACN-A 4029, less maxillary fragment with P3–M3; (F) MACN-A 4030, less mandibular fragment with p4 (talonid)–m3; (G) MACN-A 3867, right mandibular fragment with dp1–2–p3–4 (trigonid); (H) MACN-A 9716–9732?g, right mandibular fragment with m1 (talonid)–3; (I) MPM-PV 19761, right maxillary fragment with M1–2; (J) MPM-PV 19781, right mandibular fragment with p2–m1; (K) MPM-PV 19782, less maxillary fragment with P2–M3. Abbreviation: ', indicates broken tooth. Scale bar = 10 mm.
Figure 5 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 5. Scaưer diagram of the Santacrucian species of Protypotherium (except for Pr. claudum). A, Length vs. width of M1. B, Length vs. width of m1. Abbreviations: L, length; W, width.
Figure 3 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 3. Protypotherium australe (B, F–M) and Pr. praerutilum (A, C–E), in occlusal view. (A) MACN-A 3952, right mandibular fragment with p3–m3; (B) less dp1–p2–m3 of AMNH 9286; (C) MACN-A 11191a, right mandibular fragment with m1–3; (D) right p2–m3 of MACN-A 9614; (E) right i1–dp1–p2–m3 of MACN-A 1082; (F) less p4–m3 of AMNH 9565; (G) right p2–m3 of AMNH 9149; (H) less i1–dp1– p2–m3 of MPM-PV 3531; (I) MACN-A 532, right mandibular fragment with m2–3; (J) right p2–m3 of MPM-PV 3739; (K) MPM-PV 19612, right mandibular fragment with m2 (broken)–3; (L) MACN-A 3979, less mandibular fragment with p3–m3; (M) MACN-A 3955, less mandibular fragment with p3–m3. * indicates alveolus; ' indicates broken tooth. Scale bar = 10 mm.
Figure 1. A in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 1. A, Map of the outcrops of the SCF (grey), Santa Cruz Province (Argentina) showing some of the most important fossiliferous localities (modified from Vizcaíno et al. 2013). B, Detail of the geographic location of the studied fossiliferous localities at Río Santa Cruz and the western region (modified from Cuitiño et al. 2016). C, Detail of the geographic location of the fossiliferous localities from the Atlantic coast (modified from Vizcaíno et al. 2013). Abbreviations: BB, Barrancas Blancas; RB, Río Bote; SBB, Segundas Barrancas Blancas; YH, Yaten Huageno.
Figure 2 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 2. Protypotherium australe (D–E, G, I–J, L) and Pr. praerutilum (A–C, F, H, K, M), in occlusal view. (A) YPM-VPPU 15386, incomplete skull; (B) less I3 (alveolus)–C–dP1–P2–M3 of MACN-A 4049; (C) less I3–dP1–M3 of MACN-A 4278; (D) right I1 (alveolus)–dP1–P2–M3 of MACN-A 3882; (E) right I1–dP1–P2–M3 of MACN-A 9623–9633; (F) less I1 (alveolus)–dP1–P2–M3 of AMNH 9187; (G) right I1–2 (alveolus)–dP1–P2–M3 of YPM-VPPU 15643; (H) MLP 12-2886, incomplete skull; (I) right I1 (alveolus)–I2–dP1–P2–M3 of MACN-A 37; (J) MACN-A 3911, less maxillary fragment with C–dP1–P2–M3; (K) MACN-A 1778, right maxillary fragment with dP1–P2 (alveoli)– P3–M3; (L) right I1 (alveolus)–dP1–P2–M3 of AMNH 9149; (M) MACN-A 4016, less maxillary fragment with P4–M3. * indicates alveolus. Scale bar = 10 mm.
Figure 6 in Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early-Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae
Figure 6. Scaưer diagram of the Santacrucian species of Protypotherium (except for Pr. claudum). A, Length vs. width of M2. B, Length vs. width of m2. Abbreviations: L, length; W, width.
Snout shape and masticatory apparatus of the rodent-like mesotheriid ungulates (Typotheria, Notoungulata): Exploring evolutionary trends in dietary strategies through ancestral reconstructions
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Data from: Patagonian Eocene Archaeopithecidae Ameghino, 1897 (Notoungulata): systematic revision, phylogeny and biostratigraphy
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Data from: Deciduous dentition and dental eruption sequence in Interatheriinae (Notoungulata, Interatheriidae): implications in the systematics of the group
Studies focused on deciduous dentition, ontogenetic series, and tooth eruption and replacement patterns in fossil mammals have lately increased due to the recognized taxonomic and phylogenetic weight of these aspects. A study of the deciduous and permanent dentition of Interatherium and Protypotherium (Interatheriinae) is presented, mainly based on unpublished materials. Deciduous cheek teeth are brachydont and placed covering the apex of the respective permanent tooth; in addition, some morphological and metrical differences are observed along the crown height. Five dental ontogenetic stages are distinguished among the juvenile specimens, based on the degree of wear, the replacement of the deciduous premolars, and the eruption of the molars. The crown height and the wear degree of different Interatheriinae taxa show: (1) eruption pattern of molars in an anterior-posterior direction (M/m1 to M/m3); (2) pattern of replacement of deciduous premolars and eruption of permanent premolars in a posterior-anterior direction (dP/dp4 to dP/dp2 and P/p4 to P/p2); and (3) eruption of M/m3 before the replacement of dP/dp4. Results allow evaluating the diagnostic dental characteristics used to describe some interatheriines, as well as reinterpreting some taxonomic assumptions: the holotype of Protypotherium diversidens is recognized as a juvenile of another species of the genus and the species is not validated, considering it as Protypotherium sp.; the holotype of Eudiastatus lingulatus falls in the variability of Protypotherium, becoming P. lingulatus, tentatively maintaining the species, and implying the synonymy between Eudiastatus and Protypotherium; and the holotype of Eopachyrucos ranchoverdensis is reinterpreted as bearing deciduous premolars.
FIG. 18 in Un nouveau Toxodontidae (Mammalia, Notoungulata) du Pléistocène supérieur du Nordeste du Brésil
FIG. 18. — Diagramme des rapports des valeurs moyennes des segments de membres des Piauhytherium capivarae n. gen., n. sp., des valeurs extrêmes de Toxodon platensis Owen, 1837 et des valeurs moyennes de Hippopotamus amphibius Linnaeus, 1758. Les variables numérotées en abscisse correspondent respectivement aux valeurs moyennes des longueurs de l'humérus, du radius, du Mc II, du Mc III, du Mc IV (Mc V pour l'hippopotame), du fémur, du tibia, du Mt II, du Mt III et du Mt IV (Mt V pour l'hippopotame). Le référentiel est Diceros bicornis (Linnaeus, 1758).
FIG. 3. — Piauhytherium capivarae n. gen., n in Un nouveau Toxodontidae (Mammalia, Notoungulata) du Pléistocène supérieur du Nordeste du Brésil
FIG. 3. — Piauhytherium capivarae n. gen., n. sp., Lagoa dos Porcos, crâne n° 188265, holotype, vue occipitale. Échelle: 10 cm.
Fig. 8 in New Basal Interatheriidae (Typotheria, Notoungulata, Mammalia) from the Paleogene of Central Chile
Fig. 8. Ignigena minisculus, new taxon, SGOPV 3168 (holotype), left maxillary fragment, partial zygoma, C-M3, left buccal view. Tapado Fauna.
Figure 12 in Craniodental anatomy of late Oligocene archaeohyracids (Notoungulata, Mammalia) from Bolivia and Argentina and new phylogenetic hypotheses
Figure 12. Archaeohyrax suniensis sp. nov., deciduous upper dentition and slightly worn M1. A, left dP3-4, SAL 480. B, right P3, dP4, M1 (reversed), SAL 471. C, right dP2-4, M1 (reversed), YPM-PU 22061. Mesial to left and labial at the top. Scale bar = 1 cm.
Figure 5 in Craniodental anatomy of late Oligocene archaeohyracids (Notoungulata, Mammalia) from Bolivia and Argentina and new phylogenetic hypotheses
Figure 5. Archaeohyrax suniensis sp. nov., paratype, rostrum, SAL 183. A, ventral view. B, dorsal view. C, right lateral view. Scale bar = 1 cm.
Figure 9 in Craniodental anatomy of late Oligocene archaeohyracids (Notoungulata, Mammalia) from Bolivia and Argentina and new phylogenetic hypotheses
Figure 9. Archaeohyrax suniensis sp. nov., incomplete posterior part of the skull, SAL 551. Ventral view. Scale bar = 1 cm.
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