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Cervical vertebrae of rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the
Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. UNPSJB-PV 1007/1, anterior cervical vertebra in anterior (A1) and
right ventrolateral (A2) views. B. UNPSJB-PV 1007/2, anterior cervical vertebra in right lateral view. C. UNPSJB-PV 1007/3, middle cervical vertebra in

right lateral view. Lateral fossae of the centrum (hypothesized as pneumatic in origin) indicated by arrows.
Taxa Katepensaurus

Cervical vertebrae of rebbachisaurid sauropod Katepensaurus goicoecheai Ibiricu, Casal, Martínez, Lamanna, Luna, and Salgado, 2013a from the Cenomanian–Turonian Bajo Barreal Formation of Chubut Province, Argentina. A. UNPSJB-PV 1007/1, anterior cervical vertebra in anterior (A1) and right ventrolateral (A2) views. B. UNPSJB-PV 1007/2, anterior cervical vertebra in right lateral view. C. UNPSJB-PV 1007/3, middle cervical vertebra in right lateral view. Lateral fossae of the centrum (hypothesized as pneumatic in origin) indicated by arrows.

vertebra Argentina Cenomanian Turonian +3
Reconstruction of Bravasaurus arreirosorum a titanosaur dinosaur from the Late Cretaceous of Argentina
Taxa Bravasaurus

Reconstruction of Bravasaurus arreirosorum a titanosaur dinosaur from the Late Cretaceous of Argentina

Argentina Cretaceous Late Cretaceous Bravasaurus +2
Fig. 5. Forelimb bones of the titanosaurian sauropod Bustingorrytitan shiva gen. et sp. nov. from “Bustingorry II” site, Neuquén Province, Argentina,
upper Cenomanian. A. Left coracoid (holotype, MMCH-Pv 59/13) in lateral view. B. Left scapula (holotype, MMCH-Pv 59/11) in lateral view. C. Left
humerus (holotype, MMCH-Pv 59/21) in proximal (C1), anterior (C2), and distal (C3) views. D. Right radius (holotype, MMCH-Pv 59/22) in posterior
view. E. Left sternal plate (holotype, MMCH-Pv 59/15) in dorsal view. F. Articulated metacarpals I–V (holotype, MMCH-Pv 59/25–29) in proximal
(F1), anterior (F2) and distal (F3) views. G. Right ulna (holotype, MMCH-Pv 59/23) in medial (G1) and proximal (G2) views. Abbreviations: cf, coracoid

foramen; gas, glenoid articular surface; igl, infraglenoid lip; I–V, metacarpals. Scale bars 200 mm.
Taxa Bustingorrytitan

Fig. 5. Forelimb bones of the titanosaurian sauropod Bustingorrytitan shiva gen. et sp. nov. from “Bustingorry II” site, Neuquén Province, Argentina, upper Cenomanian. A. Left coracoid (holotype, MMCH-Pv 59/13) in lateral view. B. Left scapula (holotype, MMCH-Pv 59/11) in lateral view. C. Left humerus (holotype, MMCH-Pv 59/21) in proximal (C1), anterior (C2), and distal (C3) views. D. Right radius (holotype, MMCH-Pv 59/22) in posterior view. E. Left sternal plate (holotype, MMCH-Pv 59/15) in dorsal view. F. Articulated metacarpals I–V (holotype, MMCH-Pv 59/25–29) in proximal (F1), anterior (F2) and distal (F3) views. G. Right ulna (holotype, MMCH-Pv 59/23) in medial (G1) and proximal (G2) views. Abbreviations: cf, coracoid foramen; gas, glenoid articular surface; igl, infraglenoid lip; I–V, metacarpals. Scale bars 200 mm.

bone humerus scale Argentina +4
Palaeogeographic distribution of late Early and early Late Cretaceous pterosaur assemblages. Taxonomic composition of assemblages shown on Fig. 1. Palaeogeography based on Smith et al. 1994. Abbreviations: 1. Cambridge Greensand, England: 2. Lower Chalk, England: 3. Züümbayan Svita, Khuren-Dukh, Mongolia: 4. Lysaya Gora, Saratov, Russia: 5. Kem Kem red beds, Morocco: 6. Paw Paw Formation, Texas, USA: 7. Lagarcito Formation, San Luis, Argentina: 8. Santana and Crato Formations, Ceara, Brazil: 9. Toolebuc Formation, Queensland, Australia.

Palaeogeographic distribution of late Early and early Late Cretaceous pterosaur assemblages. Taxonomic composition of assemblages shown on Fig. 1. Palaeogeography based on Smith et al. 1994. Abbreviations: 1. Cambridge Greensand, England: 2. Lower Chalk, England: 3. Züümbayan Svita, Khuren-Dukh, Mongolia: 4. Lysaya Gora, Saratov, Russia: 5. Kem Kem red beds, Morocco: 6. Paw Paw Formation, Texas, USA: 7. Lagarcito Formation, San Luis, Argentina: 8. Santana and Crato Formations, Ceara, Brazil: 9. Toolebuc Formation, Queensland, Australia.

Argentina Australia Brazil Mongolia +8
Paleogeography and paleoclimate of the Late Jurassic - 150 Ma with dinosaur fossil localities:
A = Tendaguru Formation, Tanzania
C1 =  Shishugou & Kalazha Formations, China
C2 =  Shangshaximiao (Upper Shaximiao) Formation, China
E1 =  Sables de Glos, Argiles d’Octeville, Marnes de Bléville, Kimmeridge Clay, Calcareous Grit, Corallian Oolite, Oxford Clay, Portland Stone, England & France
E2 = Villar del Arzobispo, Alcobaça, Guimarota, Sobral, Amoreira-Porto Novo, Bombarral, Freixial, Lourinhã Formations, Spain & Portugal
M1-6 = Morrison Formation, United States
S1 =  Toquí & Cañadón Calcáreo Formations, Chile & Argentina

Paleogeography and paleoclimate of the Late Jurassic - 150 Ma with dinosaur fossil localities: A = Tendaguru Formation, Tanzania C1 = Shishugou & Kalazha Formations, China C2 = Shangshaximiao (Upper Shaximiao) Formation, China E1 = Sables de Glos, Argiles d’Octeville, Marnes de Bléville, Kimmeridge Clay, Calcareous Grit, Corallian Oolite, Oxford Clay, Portland Stone, England & France E2 = Villar del Arzobispo, Alcobaça, Guimarota, Sobral, Amoreira-Porto Novo, Bombarral, Freixial, Lourinhã Formations, Spain & Portugal M1-6 = Morrison Formation, United States S1 = Toquí & Cañadón Calcáreo Formations, Chile & Argentina

Argentina Chile China France +19
Anacleto and Allen fms. (Upper Cretaceous) in Auca Mahuida, Neuquen, Argentina.

Anacleto and Allen fms. (Upper Cretaceous) in Auca Mahuida, Neuquen, Argentina.

Argentina Allen Anacleto Cretaceous
Anacleto fm. (Upper Cretaceous) in Auca Mahuida, Neuquen, Argentina.
Formations Anacleto

Anacleto fm. (Upper Cretaceous) in Auca Mahuida, Neuquen, Argentina.

Argentina Anacleto Cretaceous
Candeleros fm. (Upper Cretaceous) near Cerro El Vagon, Neuquen, Argentina.
Formations Candeleros

Candeleros fm. (Upper Cretaceous) near Cerro El Vagon, Neuquen, Argentina.

Argentina Candeleros Cretaceous
Argentinosaurus huinculensis reconstruction at Museo Municipal Carmen Funes, Plaza Huincul, Neuquén, Argentina.
Taxa Argentinosaurus

Argentinosaurus huinculensis reconstruction at Museo Municipal Carmen Funes, Plaza Huincul, Neuquén, Argentina.

Argentina Argentinosauria
Skeleton of Tehuelchesaurus at the Museo Paleontológico Egidio Feruglio in Trelew, Argentina
Taxa Tehuelchesaurus

Skeleton of Tehuelchesaurus at the Museo Paleontológico Egidio Feruglio in Trelew, Argentina

Argentina Tehuelchesaurus skeleton
Skeleton of Bagualia at the Museo Paleontológico Egidio Feruglio in Trelew, Argentina
Taxa Bagualia

Skeleton of Bagualia at the Museo Paleontológico Egidio Feruglio in Trelew, Argentina

Argentina Bagualia skeleton
Fossil at the Museo Argentino de Ciencias Naturales in Caballito, Buenos Aires, Argentina.

Fossil at the Museo Argentino de Ciencias Naturales in Caballito, Buenos Aires, Argentina.

Argentina fossil Pterodaustro
The Natural Science Museum at El Chocón, in the northwestern Argentine Patagonia (the Comahue region). Fossil of dinosaur

The Natural Science Museum at El Chocón, in the northwestern Argentine Patagonia (the Comahue region). Fossil of dinosaur

museum Argentina fossil Dinosauria +1
Partial skull of Manidens condorensis from the Middle Jurassic Cañadón Asfalto Formation of Argentina. Skull reconstructions in lateral view. Dashed lines indicate estimated edges. Abbreviations: a angular antfo antorbital fossa asaf anterior surangular foramen be buccal emargination bo basioccipital bt basal tubera d dentary d1, 2, 11 dentary tooth 1, 2, 11 emfo external mandibular fossa f frontal gl glenoid gr groove j jugal jfl jugal flange jh jugal horn m maxilla m1, 11 maxillary tooth 1, 11 n nasal pd predentary pm premaxilla po postorbital pof postorbital fossa popr paroccipital process q quadrate qj quadratojugal ri ridge sa surangular sq squamosal.

Partial skull of Manidens condorensis from the Middle Jurassic Cañadón Asfalto Formation of Argentina. Skull reconstructions in lateral view. Dashed lines indicate estimated edges. Abbreviations: a angular antfo antorbital fossa asaf anterior surangular foramen be buccal emargination bo basioccipital bt basal tubera d dentary d1, 2, 11 dentary tooth 1, 2, 11 emfo external mandibular fossa f frontal gl glenoid gr groove j jugal jfl jugal flange jh jugal horn m maxilla m1, 11 maxillary tooth 1, 11 n nasal pd predentary pm premaxilla po postorbital pof postorbital fossa popr paroccipital process q quadrate qj quadratojugal ri ridge sa surangular sq squamosal.

tooth Argentina Jurassic Middle Jurassic +4
Figure 1: Geographic provenance and speculative reconstruction of the gigantic titanosaurian sauropod dinosaur Notocolossus gonzalezparejasi gen. et sp. nov.
(a) Type locality of Notocolossus (indicated by star) in southern-most Mendoza Province, Argentina. (b) Reconstructed skeleton and body silhouette in right lateral view, with preserved elements of the holotype (UNCUYO-LD 301) in light green and those of the referred specimen (UNCUYO-LD 302) in orange. Scale bar, 1 m. (All images were hand drawn by the senior author [B.J.G.R.] and subsequently edited using Adobe Illustrator software.)

Figure 1: Geographic provenance and speculative reconstruction of the gigantic titanosaurian sauropod dinosaur Notocolossus gonzalezparejasi gen. et sp. nov. (a) Type locality of Notocolossus (indicated by star) in southern-most Mendoza Province, Argentina. (b) Reconstructed skeleton and body silhouette in right lateral view, with preserved elements of the holotype (UNCUYO-LD 301) in light green and those of the referred specimen (UNCUYO-LD 302) in orange. Scale bar, 1 m. (All images were hand drawn by the senior author [B.J.G.R.] and subsequently edited using Adobe Illustrator software.)

scale Argentina holotype specimen +4
Sarmientichnus footprints from Argentina

Sarmientichnus footprints from Argentina

Argentina Sarmientichnus
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News

Fossil Evidence Pushes Back Origin of Live Birth by 90 Million Years
Fossil Evidence Pushes Back Origin of Live Birth by 90 Million Years
reproduction Argentina fossil mammals
Paleontologists studying a 236-million-year-old cynodont fossil from Argentina say they have found the earliest evidence yet of viviparity (live birth) in the evolutionary line that leads to mammals, pushing back the origin of this reproductive strategy by as much as 90 to 95 million years. The post Fossil Evidence Pushes Back Origin of Live Birth by 90 Million Years appeared first on Sci.News: Breaking Science News.
13/08/2026 sci-news
Fossil Discovery in Patagonia Reveals New Species of Horned Turtle
Fossil Discovery in Patagonia Reveals New Species of Horned Turtle
Argentina Maastrichtian fossil Dinosauria discovery extinction new species other reptiles
Paleontologists have identified a new species of meiolaniform turtle from northern Patagonia, Argentina, that lived during the Maastrichtian age, just before the asteroid-triggered mass extinction that wiped out all non-avian dinosaurs. The post Fossil Discovery in Patagonia Reveals New Species of Horned Turtle appeared first on Sci.News: Breaking Science News.
09/06/2026 sci-news
A New Unenlagiid Dinosaur from Patagonia (Argentina)
Argentina Japan Cretaceous Late Cretaceous fossil Dinosauria Kank Unenlagiidae discovery formation new species
A team of scientists from Argentina and Japan has described a new species of unenlagiid dinosaur from southern Patagonia. Named Kank australis, this small, theropod dinosaur lived around 70 million years ago during the Late Cretaceous. The fossil remains were discovered in the Chorrillo Formation of Santa Cruz Province, Argentina. The discovery helps palaeontologists better
02/06/2026 everythingdinosaur
New Dinosaur Species from Argentina May Have Specialized in Catching Fish
New Dinosaur Species from Argentina May Have Specialized in Catching Fish
Argentina Cretaceous Late Cretaceous Dinosauria Kank Unenlagiidae
Paleontologists in Argentina have identified a previously unknown species of unenlagiid dinosaur that stalked freshwater wetlands during the Late Cretaceous epoch, adding to evidence that some dinosaurs specialized in catching fish. The post New Dinosaur Species from Argentina May Have Specialized in Catching Fish appeared first on Sci.News: Breaking Science News.
29/05/2026 sci-news
This strange giant dinosaur may change what we know about Jurassic titans
Argentina Jurassic fossil Bicharracosaurus Brachiosauria Brachiosauridae Dinosauria Diplodocia evolution
A bizarre new giant dinosaur discovered in Argentina is giving paleontologists a fresh look at how Jurassic titans evolved in the Southern Hemisphere. Bicharracosaurus dionidei stretched about 20 meters long and carried a strange mix of features seen in both Diplodocus and Brachiosaurus relatives. Scientists believe it could represent the first known Jurassic brachiosaurid from South America, helping fill a major gap in the dinosaur fossil record.
12/05/2026 sciencedaily
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