La Buitrera (lower): Early/Lower Cenomanian, Argentina
collected by González, Makovicky 1999–2005

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Dromaeosauridae
Buitreraptor gonzalezorum Makovicky et al. 2005
1 individual
MPCN-PV-598 (10 measurements)
Reptilia
Araripesuchus sp. Price 1959
Pol and Apesteguía 2005 1 individual
MPCA-PV 236
Reptilia - Iguanidae
? Iguanidae indet. Oppel 1811
Apesteguía et al. 2005 1 specimen
MPCA 250
Reptilia - Testudines
Pleurodira indet. Cope 1865
Maniel and de la Fuente 2012
Dipnoi - Ceratodontidae
Ceratodus argentinus n. sp. Apesteguia et al. 2007
Apesteguia et al. 2007 1 specimen
MPCA 402, left upper tooth plate that lacks most of its first crest
see common names

Geography
Country:Argentina State/province:Río Negro
Coordinates: 39.6° South, 68.7° West (view map)
Paleocoordinates:46.7° South, 44.9° West
Basis of coordinate:stated in text
Altitude:466 meters
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Cenomanian 10 m.y. bin:Cretaceous 5
Key time interval:Early/Lower Cenomanian
Age range of interval:100.50000 - 93.90000 m.y. ago
Stratigraphy
Geological group:Neuquén Formation:Candeleros Member:Upper
Stratigraphic resolution:bed
Stratigraphy comments: upper member of formation
"it is now considered that the Candeleros Formation is wholly Cenomanian, likely lower Cenomanian (Garrido 2010)" (Rougier et al. 2011)
Lithology and environment
Primary lithology:red lithified sandstone
Includes fossils?Y
Lithology description: clearly lithified based on figure of specimen in Rougier et al. 2011 massive red sandstones
Environment:fluvial indet.
Geology comments: Many of the small vertebrate fossils recovered from this unit are articulated, suggesting that they were entombed by rapid overbank flooding events (Makovicky et al. 2012)
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Articulated whole bodies:all
Feeding/predation traces:tooth marks
Collection methods and comments
Collection excludes:all macrofossils
Collection methods:selective quarrying,mechanical,field collection
Reason for describing collection:taxonomic analysis
Collectors:González, Makovicky Collection dates:1999–2005
Metadata
Database number:55364
Authorizer:M. Carrano, E. Vlachos Enterer:K. Maguire, E. Vlachos, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-10-12 14:14:15 Last modified:2022-06-07 16:30:43
Access level:the public Released:2005-10-12 14:14:15
Creative Commons license:CC BY
Reference information

Primary reference:
14869.ETE P. J. Makovicky, S. Apesteguía, and F. L. Agnolín. 2005. The earliest dromaeosaurid theropod from South America. Nature 437:1007-1011 [M. Carrano/K. Maguire/M. Carrano]

Secondary references:

34190 S. Apesteguía, F. L. Agnolin, and G. L. Lio. 2005. An early Late Cretaceous lizard from Patagonia, Argentina. Comptes Rendus Palevol 4:311-315 [M. Carrano/M. Carrano]
72409 S. Apesteguia, F. L. Agnolin, and K. Claeson. 2007. Review of Cretaceous dipnoans from Argentina (Sarcopterygii: Dipnoi) with descriptions of new species. Revista del Museo Argentino de Ciencias Naturales nueva serie 9(1):27-40 [G. Lloyd/G. Lloyd/F. Aspromonte]
50104 C. R. A. Candeiro and A. G. Martinelli. 2006. A review of paleogeographical and chronostratigraphical distribution of mesoeucrocodylian species from the upper Cretaceous beds from Bauru (Brazil) and Neuquen (Argentina) groups, Southern South America. Journal of South American Earth Sciences 22:116-129 [P. Mannion/J. Tennant]
76298 I. A. Cerda and F. Gianechini. 2015. Determinación de estadíos ontogenéticos en Buitreraptor gonzalezorum (Dinosauria: Theropoda) a partir de la microestructura ósea [Determination of ontogeneric stages in Buitreraptor gonzalezorum (Dinosauria: Theropoda) from bone microstructure]. XXIX Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 52(4 (suppl.)):11-12 [M. Carrano/M. Carrano/M. Carrano]
49730 L. C. Gaetano, C. A. Marsicano, and G. W. Roughier. 2013. A revision of the putative Late Cretaceous triconodonts from South America. Cretaceous Research 46:90-100 [P. Mannion/J. Tennant]
19213ETE P. A. Gallina and S. Apesteguía. 2005. Cathartesaura anaerobica gen. et sp. nov., a new rebbachisaurid (Dinosauria, Sauropoda) from the Huincul Formation (Upper Cretaceous), Río Negro, Argentina. Revista del Museo Argentino de Ciencias Naturales, nuevo serie 7(2):153-166 [M. Carrano/M. Carrano/M. Carrano]
76249 F. A. Gianechini and S. de Valais. 2013. Evidencias de predación sobre los huesos de Buitreraptor gonzalezorum (Theropoda, Unenlagiinae): implicacias tafonómicas y paleobiológicas [Evidence of predation on the bones of Buitreraptor gonzalezorum (Theropoda, Unenlagiinae): taphonomic and paleobiological implications]. XXVII Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 50(4 (suppl.)):R18 [M. Carrano/M. Carrano/M. Carrano]
49276 F. A. Gianechini, P. J. Makovicky, and S. Apesteguía. 2011. The teeth of the unenlagiine theropod Buitreraptor from the Cretaceous of Patagonia, Argentina, and the unusual dentition of the Gondwanan dromaeosaurids. Acta Palaeontologica Polonica 56(2):279-290 [M. Carrano/M. Carrano]
68512 F. A. Gianechini, P. J. Makovicky, and S. Apesteguía. 2017. The cranial osteology of Buitreraptor gonzalezorum Makovicky, ApesteguÍa, and AgnolÍn, 2005 (Theropoda, Dromaeosauridae), from the Late Cretaceous of Patagonia, Argentina. Journal of Vertebrate Paleontology 27(1):e1255639:1-19 [M. Carrano/M. Carrano]
78231 F. A. Goianechini and S. Apesteguía. 2011. Unenlagiinae revisited: dromaeosaurid theropods from South America. Anais da Academia Brasileira de Ciências 83(1):163-195 [M. Carrano/M. Carrano]
64430 I. Maniel and M. S. de la Fuente. 2012. Comentarios sobre el registro de tortugas crown-Pleurodira durante el Cretacico de Patagonia. Ameghiniana 49(4):32-32 [E. Vlachos/E. Vlachos]
76340 M. J. Motta, A. M. Arranciaga Rolando, S. Rozadilla, F. Brissón Egli, and F. E. Novas. 2016. Comentarios sobre la anatomía caudal de Unenlagiidae (Theropoda, Coelurosauria) [Comments on the caudal anatomy of Unenlagiidae (Theropoda, Coelurosauria)]. XXX Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 53(6 (suppl.)):63 [M. Carrano/M. Carrano/M. Carrano]
44216 A. Palci, M. W. Caldwell, and A. M. Albino. 2013. Emended diagnosis and phylogenetic relationships of the Upper Cretaceous fossil snake Najash rionegrina Apesteguia and Zaher, 2006. Journal of Vertebrate Paleontology 33(1):131-140 [P. Mannion/J. Tennant]
15217ETE D. Pol and S. Apesteguía. 2005. New Araripesuchus remains from the early Late Cretaceous (Cenomanian–Turonian) of Patagonia. American Museum Novitates 3940:1-38 [M. Carrano/M. Carrano]