6 km north of Estancia "Ocho Hermanos": Late/Upper Cenomanian - Early/Lower Turonian, Argentina
collected by J. C. Sciutto, J. F. Bonaparte and crew 1980-1985

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Pisces indet. Linnaeus 1758
Martínez et al. 1986
synonym of Osteichthyes
Anura indet. (Fischer von Waldheim 1813)
Martínez et al. 1986
Reptilia - Testudines
Pelomedusidae indet. Cope 1868
    = Bonapartemys bajobarrealis n. gen., n. sp. Lapparent de Broin and de la Fuente 2001
Lapparent de Broin and de la Fuente 2001
MACN-CH-1469, carapace, a right posterolateral part lacking, plastron less a right longitudinal part, part of girdles, limbs and tail. Discovered by Dr Bonaparte
Prochelidella argentinae n. gen., n. sp. Lapparent de Broin and de la Fuente 2001
Lapparent de Broin and de la Fuente 2001 1 specimen
MACN-CH-1680, anterior part of a dorsal carapace, mostly in imprint, showing the anterior border and the three first pleurals and neurals. Preserved bony part of peripherals 1 to 3 (left or right), half nuchal and lateral pleurals 1 and 2. Discovered by Dr Bonaparte
Sauropoda indet. Marsh 1878
Bonaparte 1996 1 individual
"indeterminate sauropod with platycoelous caudals housed at the UNP"
? Laplatasaurus sp. Huene 1927
2 individuals
MACN-CH 1317, 18689
    = Epachthosaurus sciuttoi n. gen., n. sp. Powell 1990
Powell 1990
Reptilia - Abelisauridae
Theropoda indet. (Marsh 1881)
1 individual
"a Theropoda with femora of 70 cm and with very peculiar dorsal vertebrae" (2 measurements)
    = Xenotarsosaurus bonapartei n. gen., n. sp. Martínez et al. 1986
Martínez et al. 1986
Pterosauria indet. (Kaup 1834)
Ibiricu et al. 2012
UNPSJB-Pv 1009, first wing phalanx
Reptilia - Crocodylia
Crocodylia indet. (Owen 1842)
Martínez et al. 1986
see common names

Country:Argentina State/province:Chubut County:Sarmiento
Coordinates: 45.3° South, 69.6° West (view map)
Paleocoordinates:51.9° South, 47.3° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Period:Cretaceous Epoch:Late/Upper Cretaceous
Key time interval:Late/Upper Cenomanian - Early/Lower Turonian
Age range of interval:99.60000 - 89.30000 m.y. ago
Geological group:Chubut Formation:Bajo Barreal Member:Lower
Stratigraphic resolution:bed
Stratigraphy comments: upper portion of the Lower Member
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:terrestrial indet.
Modes of preservation:body
Degree of concentration:dispersed
Size of fossils:macrofossils
Preservation of anatomical detail:good
Articulated whole bodies:some
Associated major elements:some
Disassociated major elements:some
Collection methods and comments
Collection methods:selective quarrying,surface (float),surface (in situ),mechanical,field collection,observed (not collected)
Reason for describing collection:taxonomic analysis
Collectors:J. C. Sciutto, J. F. Bonaparte and crew Collection dates:1980-1985
Collection method comments: site discovered by J. C. Scuitto, then worked successively by MCN (1980) and UNSJB
Database number:38952
Authorizer:M. Carrano, P. Mannion, R. Benson Enterer:M. Carrano, J. Tennant, R. Benson
Modifier:R. Benson Research group:vertebrate
Created:2004-05-17 14:36:17 Last modified:2017-05-23 16:34:15
Access level:the public Released:2004-05-17 14:36:17
Creative Commons license:CC BY
Reference information

Primary reference:

30646.ETE J. F. Bonaparte. 1984. Jurassic and Cretaceous terrestrial vertebrates of South America. National Geographic Society Research Reports (1975) 16:115-125 [M. Carrano/M. Carrano]

Secondary references:

16547ETE J. F. Bonaparte. 1996. Cretaceous tetrapods of Argentina. Münchner Geowissenschaften Abhandlungen 30:73-130 [M. Carrano/M. Carrano/M. Carrano]
42415 F. de Broin and M. de la Fuente. 1993. Les tortues fossiles d'Argentine: synthese [The fossil turtles of Argentina: synthesis]. Annales de Paléontologie (Invertebrés-Vertebrés) 79(3):169-232 [R. Benson/R. Benson/M. Carrano]
46022 L. M. Ibiricu, R. D. Martinez, and G. A. Casal. 2012. The first record of Pterosauria in the Bajo Barreal Formation (Upper Cretaceous, Central Patagonia, Argentina. Ameghiniana 49(4):657-661 [P. Mannion/J. Tennant]
17570 F. d.e. Lapparent de Broin and M. S. de la Fuente. 2001. Oldest world Chelidae (Chelonii, Pleurodira), from the Cretaceous of Patagonia, Argentina. C. R. Acad. Sci. Paris, Sciences de la Terre et des planètes 333:463-470 [P. Holroyd/P. Holroyd]
13117ETE R. D. Martínez, O. Giménez, J. Rodríguez and G. Bochatey. 1986. Xenotarsosaurus bonapartei nov. gen. et sp. (Carnosauria, Abelisauridae), un nuevo Theropoda de la Formacion Bajo Barreal, Chubut, Argentina [Xenotarsosaurus bonapartei nov. gen. et sp. (Carnosauria, Abelisauridae), a new Theropoda from the Bajo Barreal Formation, Chubut, Argentina]. IV Congreso Argentino de Paleontologia y Bioestratigrafia 1:23-31 [M. Carrano/M. Carrano/M. Carrano]
10539 R. D. Martínez, O. Giménez, J. Rodríguez, M. Luna, and M. C. Lamanna. 2004. An articulated specimen of the basal titanosaurian (Dinosauria: Sauropoda) Epachthosaurus sciuttoi from the early Late Cretaceous Bajo Barreal Formation of Chubut province, Argentina. Journal of Vertebrate Paleontology 24(1):107-120 [M. Carrano/M. Carrano/M. Carrano]
24617ETE J. E. Powell. 1990. Epachthosaurus sciuttoi (gen. et sp. nov.), un dinosaurio sauropodo del Cretácico de Patagonia (Provincia de Chubut, Argentina) [Epachthosaurus sciuttoi (gen. et sp. nov.), a sauropod dinosaur from the Cretaceous of Patagonia (Chubut province, Argentina)]. Actas del V Congreso Argentino de Paleontologia y Bioestratigrafia, Tucumán, Argentina 1:123-128 [M. Carrano/M. Carrano]
13712ETE J. E. Powell. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173 [M. Carrano/M. Carrano/M. Carrano]