10 km east-northeast of Cerro Barcino: Late/Upper Aptian - Early/Lower Albian, Argentina
collected by G. del Corro & O. A. Guitérrez 1961, 1965

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Carcharodontosauridae
Megalosaurus inexpectatus n. sp. del Corro 1966
4 specimens
nomen dubium belonging to Carcharodontosauridae
MACN 18.172
Reptilia
Chubutisaurus insignis n. gen., n. sp. del Corro 1975
del Corro 1975 1 individual
MACN 18.222 (5 measurements)
see common names

Geography
Country:Argentina State/province:Chubut County:Paso de Indios
Coordinates: 43.4° South, 68.3° West (view map)
Paleocoordinates:45.5° South, 36.0° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Key time interval:Late/Upper Aptian - Early/Lower Albian
Age range of interval:122.46000 - 109.00000 m.y. ago
Stratigraphy
Geological group:Chubut Formation:Cerro Barcino Member:Puesto La Paloma/Cerro Castaño
Stratigraphic resolution:bed
Stratigraphy comments: sometimes listed as Cerro Barcino member of Gorro Frigio Fm.

Previously Bayo Overo Member. Krause et al. 2020 and Silva Nieto et al. 2017 consider the Bayo Overo member as an undifferentiated correlative of the Puesto La Paloma and Cerro Castaño members that crop out in the eastern localities of the Somuncurá-Cañadón-Asfalto basin, as in these eastern localities, the Puesto La Paloma, Cerro Castaño and Las Plumas members cannot be easily differentiated. Based on Krause et al. 2020 and Carballido et al. 2017. The contact zones between Puesto La Paloma and Cerros Castaño is approximately Aptian-Early Albian at ~118.5-110.8 Ma.
Lithology and environment
Primary lithology:intraclastic,gray,green "siliciclastic"
Includes fossils?Y
Lithology description: Rock with "cineritic" aspect, clear greenish-gray color, irregular fracture, small quartz clasts and isolated feldspathic splinters; greenish and/or reddish spots darker than the rock correspond to altered "fémicos".
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:poor
Associated major elements:some
Disassociated major elements:some
Fragmentation:occasional
Collection methods and comments
Collection methods:selective quarrying,mechanical,field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:MACN
Collectors:G. del Corro & O. A. Guitérrez Collection dates:1961, Feb 1965
Collection method comments: originally discovered by rancher Martínez in 1961
Metadata
Also known as:Chubutisaurus type
Database number:38533
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2004-04-23 11:14:48 Last modified:2023-08-11 14:23:45
Access level:the public Released:2004-04-23 11:14:48
Creative Commons license:CC BY
Reference information

Primary reference:

10339. G. del Corro. 1966. Un nuevo Dinosaurio carnivoro del Chubut [A new carnivorous dinosaur from Chubut]. Communicaciones del Museuo Argentino de Ciencias Naturales "Bernardino Rivadavia" e Institutio Nacional de Investigacion de las Ciencias Naturales: Paleontologia 1(1):1-4 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

59610 J. F. Bonaparte. 1978. El Mesozoico de America de Sur y sus Tetrapodos [The Mesozoic of South America and its tetrapods]. Opera Lilloana 26:1-596 [M. Carrano/M. Carrano]
63573 J. F. Bonaparte. 1984. I dinosauri dell’Argentina [. In G. M. Ronzoni, M. L. Greggio, & T. B. Guarinoni (eds.), Sulle Orme dei Dinosauri 125-143 [M. Carrano/M. Carrano]
16547ETE J. F. Bonaparte. 1996. Cretaceous tetrapods of Argentina. Münchner Geowissenschaften Abhandlungen 30:73-130 [M. Carrano/M. Carrano/M. Carrano]
13929ETE J. F. Bonaparte and Z. B. Gasparini. 1979. Los sauropodos de los grupos Neuquén y Chubut, y sus relaciones cronologicas [The sauropods of the Neuquén and Chubut Groups, and their chronological relationships]. Actas del VII Congreso Geológico Argentino, Neuquén 2:393-406 [M. Carrano/M. Carrano/M. Carrano]
10338 G. del Corro. 1975. Un nuevo sauropodo del Cretácico Superior. Actas del Primer Congreso Argentino de Paleontologia y Bioestratigrafia 2:229-240 [M. Carrano/M. Carrano/M. Carrano]
85641 O. d. V. Giménez. 1999. Nuevo registro de Sauropoda del Cretácico Inferior de la provincia del Chubut [New report of Sauropoda from the Lower Cretaceous of Chubut province]. XIV Jornadas Argentinas de Paleontología de Vertebrados, Neuquén y Plaza Huincul, 18 al 20 de mayo de 1998, Resúmenes. Ameghiniana 36(1):102 [M. Carrano/M. Carrano]
79276 J. M. Krause, J. Ramezani, A. M. Umazano, D. Pol, J. L. Carballido, J. P. Sterli Puerta, N. R. Cúneo and E. S. Bellosi. 2020. High-resolution chronostratigraphy of the Cerro Barcino Formation (Patagonia): Paleobiologic implications for the mid-cretaceous dinosaur- rich fauna of South America. Gondwana Research 80:33-49 [P. Mannion/G. Varnham/G. Varnham]
10337 T. H. Rich, P. J. Vickers-Rich, F. E. Novas, R. Cuneo, P. Puerta and R. Vacca. 1998. Theropods from the "Middle" Cretaceous Chubut Group of the San Jorge Sedimentary Basin, central Patagonia. A preliminary note. GAIA 15:111-115 [M. Carrano/M. Carrano/M. Carrano]