The Ituzaingó Formation (Spanish : Formación Ituzaingó ), in older literature also described as Entre Ríos or Entrerriana Formation , is an extensive geological formation of Late Miocene (Tortonian , or Huayquerian in the SALMA classification ) age in the Paraná Basin of the Corrientes , Santa Fe and Entre Ríos Provinces in Mesopotamia , northeastern Argentina .[ 1] mudstones , cross-bedded sandstones and conglomerates deposited in a fluvio -deltaic environment and is renowned for the preservation of a rich fossil assemblage, including many mammals , birds , reptiles , fish , bivalves , foraminifera , ichnofossils and flora .
Map of the Paraná River drainage basin with the river indicated. Most outcrops of the Ituzaingó Formation flank the middle course of the Paraná River. The Ituzaingó Formation was first described by De Alba in 1953 and later by Herbst in 1971.[ 2] [ 3] Paraná River to 40 kilometres (25 mi) east of Tostado .[ 4] Mesopotamia ), in the provinces of Corrientes , Santa Fe and Entre Ríos , among other locations along the banks of the Paraná River .[ 5]
The formation overlies the marine Paraná Formation and is unconformably overlain by the Puerto Alvear ,[ 6] Hernandarías and Yupoí Formations of Early Pleistocene (Uquian and Ensenadan respectively) age.[ 5] [ 7] [ 8] Timbúes Formation .[ 9] Rosario Formation .[ 10]
The formation contains a basal conglomeratic member "Conglomerado osífero" (bony conglomerate ) with abundant vertebrate remains.[ 11] Puelches Formation of the subsurface of Buenos Aires Province . According to the mammals occurring in the conglomerate and the stratigraphic relationships, the age of the base of Ituzaingo Formation is almost exclusively Tortonian (Late Miocene ) or Huayquerian in the SALMA classification.[ 12]
Depositional environment [ edit ] The formation, as the Paraná and Puelches Formations, has been deposited in a vast Miocene tidal flat environment.[ 13] [ 11]
Alternatively, the Conglomerado Osífero Member has been interpreted as tide -dominated fluvial channels, pertaining to the marine Paraná Formation.[ 14]
The Ituzaingó Formation has provided a large variety of fossils, of various groups, from mammals to birds and reptiles to fish and flora. The terrestrial fauna is predominant while a few marine genera are also present.[ 15] Honda Group at La Venta in Colombia, the Urumaco Formation at Urumaco in Venezuela and the Pebas Formation of the Amazon region of Colombia, Ecuador, Peru and Brazil.[ 16] ground sloth genera present in the Ituzaingó Formation are endemic from this unit, whereas other are also present in the Arroyo Chasicó Formation of Buenos Aires Province , the Andalhuala and Corral Quemado Formations of Catamarca Province , and the Toro Negro Formation of La Rioja Province .[ 17]
Taxa
Species
Presence
Abundance
Description
Images
Notes
Eumysops E. parodii
Notictis N. ortizi
Taxa
Species
Presence
Abundance
Description
Images
Notes
Cyonasua C. Argentina
Taxa
Species
Presence
Abundance
Description
Images
Notes
Protelphidium P. tuberculatum
Ostrea O. sp.
Taxa
Species
Presence
Abundance
Description
Images
Notes
Arenicolites
Huayquerian correlations [ edit ]
^ Ituzaingó Formation at Fossilworks .org^ Vezzosi, 2015, p.27
^ Vezzosi, 2015, p.28
^ Vezzosi, 2015, p.29
^ a b Franco, 2014, p.16
^ Brunetto, 2013, p.22
^ Cione et al., 2000, p.195
^ Cione et al., 2009, p.3
^ Vezzosi, 2015, p.41
^ Vezzosi, 2015, p.75
^ a b Cione et al., 2005, p.49
^ a b c d e f g h i Colonia La Celina at Fossilworks .org^ Torra, 2005, p.46
^ Martín Pérez, 2013, p.291
^ Martín Pérez, 2013, p.27
^ Cione et al., 2005, p.58
^ Brandoni, 2013, p.135
^ a b c d e f g h i Paraná, Pueblo Brugo to Diamante, Ituzaingó Fm. at Fossilworks .org^ Noriega & Agnolin, 2008, pp.272-285
^ Agnolin & Noriega, 2012
^ a b c d e Ciudad de Paraná at Fossilworks .org^ a b Candela, 2005, pp.43–46
^ a b Scillato et al., 2013, pp.119–120
^ a b Góis et al., 2013, p.177
^ Brandoni & Scillato, 2007, p.430
^ Brandoni & Scillato, 2007, p.431
^ Brandoni, 2008, p.14
^ Brandoni, 2008, p.16
^ Brandoni, 2011, p.36
^ Brandoni, 2014, p.34
^ Scheyer & Delfino, 2016, p.56
^ a b Bona, P.; Barrios, F.; Ezcurra, M.D.; Victoria, M.; Blanco, F.; Cidade, G.M. (2024). "New taxa of giant caimans from the southernmost hyperdiverse wetlands of the South American late Miocene". Journal of Systematic Palaeontology . 22 (1). doi :10.1080/14772019.2024.2375027 . ^ Cione et al., 2009, p.4
^ Cione et al., 2013, p.70
^ a b Cione et al., 2005, p.52
^ Azpelicueta & Cione, 2016, p.221
^ a b Torra, 2005, p.45
^ Franco, 2018, p.646
^ Franco, 2014, p.25
^ Brea et al., 2013a, pp.45-47
^ Brea et al., 2013b, p.4
^ Franco & Brea, 2015, p.3
^ Moya & Brea, 2020
El Neógeno de la Mesopotamia argentina
Brunetto, Ernesto; Noriega, Jorge I.; Brandoni, Diego (2013), "Sedimentología, estratigrafía y edad de la Formación Ituzaingó en la provincia de Entre Ríos, Argentina in El Neógeno de la Mesopotamia argentina" , Asociación Paleontológica Argentina, Publicación Especial , 14 : 13–27, retrieved 2018-10-08 Brea, Mariana; Franco, María Jimena; Zucol, Alejandro F. (2013a), "Paleoflora de la Formación Paraná (Mioceno Tardío), Cuenca Chaco-Paranaense, Argentina in El Neógeno de la Mesopotamia argentina" (PDF) , Asociación Paleontológica Argentina, Publicación Especial , 14 : 41–55, retrieved 2018-10-08 Cione, Alberto L.; Cabrera, Daniel A.; Azpelicueta, María de las Mercedes; Casciotta, Jorge R.; Barla, María Julia (2013), "Peces del Mioceno marino y continental en Entre Ríos, Oriente Central de Argentina in El Neógeno de la Mesopotamia argentina" (PDF) , Asociación Paleontológica Argentina, Publicación Especial , 14 : 65–77, retrieved 2018-10-08 Scillato Yané, Gustavo J.; Góis, Flávio; Zurita, Alfredo E.; Carlini, Alfredo A.; González Ruiz, Laureano R.; Krmpotic, Cecilia M.; Oliva, Cristian; Zamorano, Martín (2013), "Los Cingulata (Mammalia, Xenarthra) del "Conglomerado Osífero" (Miocene tardío) de la Formación Ituzaingó de Entre Ríos, Argentina" (PDF) , Revista de la Asociación Paleontológica Argentina Publicación Especial , 14 : 118–134, retrieved 2018-10-08 Brandoni, Diego (2013), "Los Tardigrada (Mammalia, Xenarthra) del Mioceno Tardío de Entre Ríos, Argentina in El Neógeno de la Mesopotamia argentina" , Asociación Paleontológica Argentina, Publicación Especial , 14 : 135–144, retrieved 2018-10-08 Agnolín, Federico L.; Noriega, Jorge I. (2012), "Una nueva especie de ñandú (Aves: Rheidae) del Mioceno tardío de la Mesopotamia Argentina" , Ameghiniana 49 (2): 236–246, doi :10.5710/AMGH.v49i2(492) , hdl :11336/62660 , retrieved 2018-10-08 Azpelicueta, María de las Mercedes; Cione, Alberto Luis (2016), "A southern species of the tropical catfish genus Phractocephalus (Teleostei: Siluriformes) in the Miocene of South America" , Journal of South American Earth Sciences 67 : 221–230, doi :10.1016/j.jsames.2016.03.002 , hdl :11336/50146 , retrieved 2018-10-08 Brandoni, Diego (2014), "A new genus of Megalonychidae (Mammalia, Xenarthra) from the Late Miocene of Argentina" (PDF) , Revista Brasileira de Paleontologia 17 : 33–42, doi :10.4072/rbp.2014.1.04 , retrieved 2018-10-08 Brandoni, Diego (2011), "The Megalonychidae (Xenarthra, Tardigrada) from the late Miocene of Entre Ríos Province, Argentina, with remarks on their systematics and biogeography" , Geobios 44 : 33–44, doi :10.1016/j.geobios.2010.06.005 , hdl :11336/79978 , retrieved 2018-10-08 Brandoni, Diego (2008), "Nuevos materiales de Ortotheriinae (Xenarthra, Tardigrada, Megalonychidae) procedentes del "Mesopotamiense" (Mioceno tardío) de Entre Ríos" , Temas de la Biodiversidad del Litoral , 17 : 11–20, retrieved 2018-10-08 Brandoni, Diego; Scillato Yané, Gustavo J. (2007), "Los Megatheriinae (Xenarthra, Tardigrada) del Terciario de Entre Ríos, Argentina: aspectos taxonómicos y sistemáticos" , Ameghiniana 44 : 427–434, retrieved 2018-10-08 Brea, Mariana; Zucol, Alejandro F.; Franco, María Jimena (2013b), "A new Bambusoideae (Poaceae: Bambusoideae: Bambuseae: Guaduinae) from the Ituzaingó Formation (Pliocene–Pleistocene), Entre Ríos, Argentina" , Review of Palaeobotany and Palynology 192 : 1–9, doi :10.1016/j.revpalbo.2012.12.006 , hdl :11336/78560 , retrieved 2018-10-08 Candela, Adriana Magdalena (2005), "Los roedores del "Mesopotamiense" (Mioceno tardío, Formación Ituzaingó) de la provincia de Entre Ríos (Argentina)" (PDF) , Insugeo 14 : 37–48, retrieved 2018-10-08 Cione, L.A.; Dahdul, W.M.; Lundberg, J.G.; Machado Allison, A. (2009), "Megapiranha paranensis , a new genus and species of Serrasalmidae (Characiformes, Teleostei) from the upper Miocene of Argentina" , Journal of Vertebrate Paleontology 29 (2): 350–358, doi :10.1671/039.029.0221 , retrieved 2018-10-08 Cione, Alberto Luis; Casciotta, Jorge Rafael; Azpelicueta, María de las Mercedes; Barla, María Julia; Cozzuol, Mario Alberto (2005), "Peces marinos y continentales del Mioceno del área mesopotámica argentina. Edad y relaciones biogeográficas" (PDF) , Insugeo 14 : 49–64, retrieved 2018-10-08 Cione, A.L.; Azpelicueta, M.M.; Bond, M.; Carlini, A.A.; Casciotta, J.R.; Cozzuol, M.A.; Fuente, M.; Gasparini, Z.; Goin, J. Noriega, G.J. Scillato Yané, L. Soibelzon, E.P. Tonni, D. Verzi, and M.G. Vucetich, F.J. (2000), "Miocene vertebrates from Entre Rios province, eastern Argentina" (PDF) , Serie Correlación Geológica , 14 : 191–237, retrieved 2018-10-08 {{citation }}: CS1 maint: multiple names: authors list (link )Franco, María Jimena (2018), "Small Celastraceae and Polygonaceae twigs from the Upper Cenozoic (Ituzaingó Formation) of the La Plata Basin, Argentina" , Historical Biology , 30 (5): 646–660, doi :10.1080/08912963.2017.1313840 , hdl :11336/21859 , retrieved 2018-10-08 Franco, María Jimena; Brea, Marianne (2015), "First extra-Patagonian record of Podocarpaceae fossil wood in the Upper Cenozoic (Ituzaingó Formation) of Argentina" , New Zealand Journal of Botany 53 (2): 103–116, doi :10.1080/0028825X.2015.1029055 , hdl :11336/39775 , retrieved 2018-10-08 Franco, María Jimena (2014), "Estípites de Arecaceae en la Formación Ituzaingó (Plioceno-Pleistoceno), Entre Ríos, Argentina" , Acta Geológica Lilloana 26 : 14–29, retrieved 2018-10-08 Góis, Flávio; Scillato Yané, Gustavo Juan; Carlini, Alfredo Armando; Guilherme, Edson (2013), "A new species of Scirrotherium Edmund & Theodor, 1997 (Xenarthra, Cingulata, Pampatheriidae) from the late Miocene of South America" , Alcheringa: An Australasian Journal of Palaeontology , 37 (2): 177–188, doi :10.1080/03115518.2013.733510 , hdl :11336/18791 , retrieved 2018-10-08 Martín Pérez, Leandro (2013), Sistemática, tafonomía y paleoecología de los invertebrados de la Formación Paraná (Mioceno), Provincia de Entre Ríos, Argentina (PhD thesis) (PDF) , Universidad Nacional de La Plata , pp. 1–398, retrieved 2018-10-08 Moya, Eliana; Brea, Mariana (2020), "Combretaceous fossil wood from Ituzaingó Formation (Late Miocene?), Argentina, indicate a coastal marine environment", Review of Palaeobotany and Palynology 281 : Article 104270, doi :10.1016/j.revpalbo.2020.104270 , hdl :11336/142562 Noriega, Jorge I.; Agnolin, Federico L. (2008), "El registro paleontológico de las Aves del "Mesopotamiense" (Formación Ituzaingó; Mioceno tardío-Plioceno) de la provincia de Entre Ríos, Argentina (Mioceno Superior) de Argentina" (PDF) , Temas de la Biodiversidad del Litoral III , 17 : 271–290, retrieved 2018-10-08 Scheyer, T.M.; Delfino, M. (2016), "The late Miocene caimanine fauna (Crocodylia: Alligatoroidea) of the Urumaco Formation, Venezuela" (PDF) , Palaeontologia Electronica 19 : 1–57, retrieved 2018-10-09 Torra, Roberto (2005), "The Chaco Paraná Basin rift basin system. An approach to the tectonic-stratigraphical evolution from the Late Cretaceous to Quaternary" (PDF) , Ciência e Natura 27 : 25–64, retrieved 2018-10-08 Vezzosi, Raúl Ignacio (2015), Diversidad de los mamíferos del Pleistoceno de la Provincia de Santa Fe, Argentina: aspectos taxonómicos, bioestratigráficos y paleobiogeográficos relacionados (PhD thesis) (PDF) , Universidad Nacional de La Plata , pp. 1–913, retrieved 2018-10-08 Brandoni, Diego; Scillato Yané, Gustavo J.; Miño Boilini, Ángel R.; Favotti, Emmanuel (2016), "Los Tardigrada (Mammalia, Xenarthra) de Argentina: diversidad, evolución y biogeografía" (PDF) , Contribuciones del MACN : 263–274, retrieved 2018-10-08 Croft , Darin A (2016), Horned Armadillos and Rafting Monkeys: The Fascinating Fossil Mammals of South America Indiana University Press , pp. 1–320, ISBN 9780253020949 , retrieved 2018-10-08 Simpson , George Gaylord (1996), Splendid Isolation: The Curious History of South American Mammals ISBN 9780783733111 , retrieved 2018-10-08 Tambussi, Claudia P.; Degrange, Federico (2012), South American and Antarctic Continental Cenozoic Birds: Paleobiogeographic Affinities and Disparities Springer , pp. 1–113, ISBN 9789400754676 , retrieved 2018-10-08 
Argentina
Uruguay
Brazil
Peru
Bolivia
Venezuela
Huayquerian volcanoclastics
Huayquerian flora